In loop quantum cosmology (LQC), the initial singularity is replaced by a quantum bounce, leading to a universal postbounce evolution characterized by three distinct epochs: bouncing, transition, and slow-roll inflation, before the hot big-bang universe starts. While the generic nature of inflation …

[APS Open Sci. 1, 000120] Published Wed Sep 02, 2026

The $(1+1)$-dimensional ${\mathbb{Z}}_2$ gauge theory is the simplest model that allows for quantum simulation to probe the fundamental aspects of a gauge theory coupled with dynamical fermions. To reliably benchmark such a system, it is crucial to understand the nonunitary quantum dynamics arising from effective n…

[APS Open Sci. 1, 000118] Published Tue Sep 01, 2026

Energy transfer and light emission behavior at subwavelength scales are governed by near-field interactions between an emitter and its surrounding refractive-index environment, which can modify emission at the nanoscale and influence the far-field response in devices such as solar cells and light-em…

[APS Open Sci. 1, 000119] Published Tue Sep 01, 2026

We develop an algorithm to automatically design photonic gates and circuits that is based on a combination of optimization and pruning methods. It starts with a general ansatz for optical circuits with tunable parameters that are then subjected to optimization. The algorithm simplifies the final cir…

[APS Open Sci. 1, 000115] Published Mon Aug 31, 2026

Diffusion-based large language models have recently attracted significant interest as a promising class of nonautoregressive generative models. However, their applications to quantum many-body systems remain largely unexplored. We introduce M-Diffushadow, a multimodal diffusion language model for qu…

[APS Open Sci. 1, 000116] Published Mon Aug 31, 2026

Molecular dynamics simulations of two-dimensional (2D) diplon crystals (electrons on helium films) reveal a melting crossover from first order to continuous as film thickness $d$ grows relative to lattice constant $a$. At small $d/a$, hysteresis persists at $N=40000$ alongside a strong Binder-cumulant anoma…

[APS Open Sci. 1, 000117] Published Mon Aug 31, 2026

Reflection and transmission (tunneling) reveal the wave nature of ultracold matter when scattered from an impurity and are of great importance in atomtronics technology. Using the time-dependent Gross-Pitaevskii equation (GPE), we investigate the trapping, reflection, and transmission of a bright so…

[APS Open Sci. 1, 000113] Published Fri Aug 28, 2026

We consider physics behind the FLASH modality of cancer radiation treatment, where extremely short treatment times are achieved with ultrahigh dose rates maintaining the conventional antitumor effectiveness and yet substantially reducing damage to normal tissues (sparing effect). The difference in r…

[APS Open Sci. 1, 000114] Published Fri Aug 28, 2026

Tailoring light beams in terms of intensity, phase, and polarization distribution has recently garnered significant attention. This work considers vector beams obtained by the natural conical diffraction phenomenon, occurring when a focused light beam travels along one of the optic axes of a biaxial…

[APS Open Sci. 1, 000112] Published Thu Aug 27, 2026

We investigate magnetotransport in a time-reversal symmetry-broken, untilted Weyl semimetal in the simultaneous presence of momentum-space Berry curvature and skyrmion-induced emergent magnetic fields ${\mathbf{B}}_{\mathrm{emer}}$. Using a semiclassical Boltzmann approach incorporating Berry-curvature corrections and inter…

[APS Open Sci. 1, 000108] Published Wed Aug 26, 2026

By systematically introducing small symmetry-violating terms into quantum gates, we examine whether such perturbations can reproduce the tomographic noise patterns observed on actual quantum hardware. This study fits into the broader context of quantum computing and quantum information processing, w…

[APS Open Sci. 1, 000109] Published Wed Aug 26, 2026

In an open quantum ring (OQR), an asymmetric ring-to-electrode configuration, where the upper and lower arms have unequal lengths, generates antiresonances in the junction transmission spectrum around the doubly degenerate eigenenergies of the isolated ring Hamiltonian. The asymmetric OQR also gives…

[APS Open Sci. 1, 000110] Published Wed Aug 26, 2026

The high-extinction cross-polarization measurement of a paraxial laser beam results in a Hermite-Gaussian (${\text{HG}}_{11}$)-like four lobes with a dark-centered cross pattern. The azimuthally spin-separated mode pattern is understood to result from the spin-orbit interaction of light. The perfect dark region a…

[APS Open Sci. 1, 000111] Published Wed Aug 26, 2026

We analyze decoherence in a one-loop Stern-Gerlach-type matter-wave interferometer for a massive nanoparticle embedded with a nitrogen-vacancy-centered nanodiamond evolving under an effective harmonic-oscillator dynamics in a magnetic-field gradient. We assume that the Stern-Gerlach interferometer i…

[APS Open Sci. 1, 000106] Published Tue Aug 25, 2026

On the grounds of nonadditive entropies—appropriate for complex systems—we investigate the electroencephalogram amplitudes of typical and attention-deficit hyperactivity disorder (ADHD) children. The corresponding probability distributions are $q$-Gaussians, i.e., $\rho \left(x\right)\propto e_q^{-\beta x^2}\equiv {[1+(q-1)\beta x^2]}^{1/(1-q)}$, wher…

[APS Open Sci. 1, 000107] Published Tue Aug 25, 2026

We construct a series of graphene-based superconducting quantum circuits and integrate them into three-dimensional (3D) cavities. For a device exhibiting single-qubit behavior, we demonstrate flux-tunable qubit transition, with a relaxation time $T_1\approx 48\mathrm{ns}$ measured in one cooldown at a reduced qubit fr…

[APS Open Sci. 1, 000101] Published Mon Aug 24, 2026

We consider highly inaccurate measurements made on classical stochastic and quantum systems. In the quantum case, such a “weak” measurement preserves coherence between the system's alternatives. We demonstrate that in both classically and quantally the information about the scenario realized in each…

[APS Open Sci. 1, 000102] Published Mon Aug 24, 2026

Local material inhomogeneities can strongly influence magnetization dynamics and macroscopic magnetic properties, yet detecting such defects from magnetic imaging data remains challenging when thermal fluctuations and experimental noise obscure static contrast. Here, we investigate defect detection …

[APS Open Sci. 1, 000103] Published Mon Aug 24, 2026

A quantum network enables the execution of advanced protocols, such as distributed quantum computing, quantum metrology, quantum cryptography, and long-distance quantum communication. Anomalous nodes pose significant threats to these protocols, as they are notoriously difficult to detect and can cau…

[APS Open Sci. 1, 000104] Published Mon Aug 24, 2026

Labyrinthine structures are ubiquitous in pattern-forming systems arising from a wide variety of physical, chemical, and biological processes. Yet, their characterization remains challenging due to the lack of long-range order and the resultant complicated morphologies. Here, we present an approach …

[APS Open Sci. 1, 000105] Published Mon Aug 24, 2026

A linear stability analysis is conducted to decipher how the thermal and surfactant Marangoni numbers affect primary instabilities when a two-dimensional incompressible viscous film flows down a uniformly heated flexible substrate under gravity. Since the viscous film is nonisothermal and a soluble …

[APS Open Sci. 1, 000100] Published Fri Aug 21, 2026

Two-level systems (TLS) are widely recognized as a dominant source of energy relaxation in superconducting qubits, limiting coherence times and device performance. While TLS-induced dissipation is often modeled as independent channels, interacting TLS can form finite many-body environments whose dyn…

[APS Open Sci. 1, 000099] Published Wed Aug 19, 2026

Artificial spin ice provides a versatile setting for emergent gauge fields and magnetic monopole excitations. Here, we propose a driven-dissipative polariton realization of artificial spin ice, in which the circular polarization of each link mode plays the role of an Ising degree of freedom, while a…

[APS Open Sci. 1, 000097] Published Tue Aug 18, 2026

Vacuum electron-positron pair production is investigated using the Dirac-Heisenberg-Wigner formalism in spatially inhomogeneous electric fields. The external field, given by $E(x,t){\mathbf{e}}_x$, exhibits a strong positional dependence and a strict spatial antisymmetry—i.e., $E(-x)=-E\left(x\right)$. Our results demonstrate…

[APS Open Sci. 1, 000098] Published Tue Aug 18, 2026

The fluctuations in the phonon vacuum state can lead to zero point density fluctuations in a material, which in turn lead to local zero point fluctuations of the dielectric properties of the material. We argue that the density fluctuations lead to a fluctuating force on a test charge, such as an ele…

[APS Open Sci. 1, L000096] Published Mon Aug 17, 2026

Quantum networks enable forms of nonlocality beyond the standard Bell scenario, with a multitude of potential applications. Continuous-variable (CV) platforms are particularly attractive for large-scale networks, offering deterministic entanglement generation and favorable prospects for long-distanc…

[APS Open Sci. 1, 000095] Published Fri Aug 14, 2026

Quantum batteries can be charged by performing a work “instantaneously” in the limit of a large number of cells, achieving a so-called quantum advantage. In general, the work exhibits statistics that can be represented by a quasiprobability in the presence of initial quantum coherence in the energy …

[APS Open Sci. 1, 000093] Published Thu Aug 13, 2026

To overcome the fast oscillatory behavior of correlation functions for extracting scattering phase shift in real-time quantum simulations encountered in the work of Guo et al. [Phys. Rev. D 113, 054512 (2026)], we propose and test two solutions in the present work. One is to simulate Hermitian syste…

[APS Open Sci. 1, 000094] Published Thu Aug 13, 2026

The XZZX code is a variant of the surface code tailored to address biased noise in realistic quantum devices. We propose a simulated annealing (SA) decoder for the XZZX code. Our SA decoder is amenable to parallelization because its Markov chain Monte Carlo updates are simple and local. To initializ…

[APS Open Sci. 1, 000090] Published Wed Aug 12, 2026

Recent discoveries of multi-Q magnetic structures in centrosymmetric compounds have stimulated growing interest in their microscopic origin and observable properties. Here, we calculate the dynamical magnetic structure factor for a double-Q magnetic structure and compare it with that of a single-Q c…

[APS Open Sci. 1, 000091] Published Wed Aug 12, 2026

As quantum technologies advance toward miniaturization, understanding the energetic limits of quantum information processing becomes essential. This work establishes an operational characterization of the free energy of quantum processes, providing a unified framework to quantify the optimal work gain or expenditure for manipulating channels, states, and measurements.

[APS Open Sci. 1, 000092] Published Wed Aug 12, 2026

We numerically study confined channel flow around an obstacle using a two-dimensional soft-particle model, inspired by experiments performed in the same geometry. We systematically vary the polydispersity, the external driving force, and the packing fraction of the system. Our simulations capture a …

[APS Open Sci. 1, 000087] Published Fri Aug 07, 2026

We present a method for the numerical analysis of superconducting quantum circuits combining lumped elements, either linear or nonlinear (i.e., Josephson junctions), and distributed coplanar waveguide (CPW) structures. CPW transmission lines and multiline couplers are directly modeled without discre…

[APS Open Sci. 1, 000088] Published Fri Aug 07, 2026

Previous theoretical studies have shown that attosecond electron dynamics can, in principle, be captured in electron momentum spectroscopy (EMS) using ultrashort electron pulses. By including further analytical considerations on the scattering probability, we here study the effect of the finite tran…

[APS Open Sci. 1, 000089] Published Fri Aug 07, 2026

The gradient boosting regressor, an ensemble learning technique, is utilized to correct the residuals in nuclear mass excess across six different nuclear mass models. The corrected residuals are substantially reduced and further improved by applying a weighted averaging method, which benefits from p…

[APS Open Sci. 1, 000085] Published Thu Aug 06, 2026

Finite-time thermodynamic transformations generally dissipate energy, as required by the second law, so identifying and investigating energetically optimal processes remain relevant for understanding and designing efficient thermal devices. In this context, we present here a systematic experimental …

[APS Open Sci. 1, 000086] Published Thu Aug 06, 2026

Rydberg sensors offer a unique approach to radio-frequency (rf) detection, leveraging the high sensitivity and quantum properties of highly excited atomic states to achieve performance levels beyond classical technologies. Nonlinear responses and distortion behavior in Rydberg atom receivers are cri…

[APS Open Sci. 1, 000083] Published Wed Aug 05, 2026

High-dimensional biomedical studies routinely confront three coupled obstacles: structured population heterogeneity, latent technical confounding, and representational inequity that can degrade inference for under-represented groups. We develop the model-based equitable learning framework (M-ELF), a…

[APS Open Sci. 1, 000084] Published Wed Aug 05, 2026

Axions are hypothetical particles that could address both the strong charge-parity problem in quantum chromodynamics and the enigmatic nature of dark matter. However, if axions exist, their mass remains unknown, and they are expected to interact very weakly with the electromagnetic field, which expl…

[APS Open Sci. 1, 000078] Published Mon Aug 03, 2026

Terahertz (THz) spectroscopy holds transformative potential for noninvasive sensing, yet characterizing individual nanoparticles in complex biological environments remains challenging due to the far-field diffraction limit. While near-field dipolar theory is well established, its application to char…

[APS Open Sci. 1, 000080] Published Mon Aug 03, 2026

Continuous far-field zone focusing of flexural wave is highly desirable for applications such as structural health monitoring, energy harvesting, and advanced sensing. In this work, we propose a metalens design paradigm capable of focusing flexural wave across a continuous zone in the far-field regi…

[APS Open Sci. 1, 000081] Published Mon Aug 03, 2026

Measuring fluid velocities in rapidly rotating, thermally driven flows is challenging because conventional particle-tracking methods can be impractical, especially in planetary fluid dynamics experiments involving curved boundaries. Researchers address this problem with a new thermal image velocimetry (TIV) formulation, which uses dense optical flow to track evolving free-surface temperature patterns instead of suspended particles. The approach provides accurate velocity measurements while circumventing many of the optical constraints of traditional visualization methods, thus, broadening the experimental toolkit for probing the complex dynamics of rotating convective turbulence.

[APS Open Sci. 1, 000082] Published Mon Aug 03, 2026

The non-Hermitian spinful Aubry-André-Harper model in the presence of Rashba-type spin-orbit coupling and a spatially varying textured magnetic field is studied. Interestingly, our analysis produces a butterfly spectral map due to the nontrivial extent of localization of the states in the spectrum. …

[APS Open Sci. 1, L000079] Published Mon Aug 03, 2026

A classical-limit formula is derived for matrix elements between bound states of distinct one-dimensional potentials. We leave open the physical interpretation of the potentials, but generally envision them to be Born-Oppenheimer-type potentials with the position variable $x$ identifying with a slowly…

[APS Open Sci. 1, 000077] Published Fri Jul 31, 2026

The theoretical understanding of conventional superconductivity as the phonon-assisted formation and condensation of two-electron Cooper pairs is a significant triumph in condensed matter physics. Here, we propose many-electron characterizations of higher-charge superconductivity with Cooper pairs c…

[APS Open Sci. 1, L000076] Published Fri Jul 31, 2026

Researchers have theoretically predicted the “asymmetric antibimeron” (AAB)—a novel topological spin texture composed of an antivortex and a crescent-shaped vortex found in in-plane magnetized chiral ferromagnets—offering a promising new platform for high-density spintronic memory and logic devices.

[APS Open Sci. 1, 000075] Published Thu Jul 30, 2026

Topological quantum computing promises intrinsic fault tolerance by encoding quantum information in non-Abelian anyons, where quantum gates are implemented via braiding. While braiding operations are robust against local perturbations, a critical yet often overlooked challenge arises when scaling be…

[APS Open Sci. 1, 000074] Published Wed Jul 29, 2026

Photon-number-resolved detection with superconducting nanowire single-photon detectors (SNSPDs) attracts increasing interest, often focusing on the rising edge of the electrical signal as the main source of photon-number-resolving information. It remains unclear whether additional photon-number info…

[APS Open Sci. 1, 000073] Published Tue Jul 28, 2026

A metric is called universal if every symmetric conserved rank-two tensor constructed locally from the metric, the curvature, and covariant derivatives of the curvature is proportional to the metric. Such a metric solves arbitrary metric-based higher-curvature field equations after, at most, a chang…

[APS Open Sci. 1, 000071] Published Mon Jul 27, 2026

We develop a one-class, deep-learning framework to detect the phase transition and recover critical behavior of the three-dimensional (3D) Ising model. A 3D convolutional autoencoder (CAE) is trained on ground-state configurations only, without prior knowledge of the critical temperature, the Hamilt…

[APS Open Sci. 1, 000072] Published Mon Jul 27, 2026

This study replicates hardware-focused Simulated Quantum Annealing (SQA) factorization benchmarks on standard CPUs, adding a rigorously tuned multi-start classical baseline (A-PSA) to ensure a fair comparison. The authors found that SQA’s advantage is highly situational; classical multi-start methods win out on less rugged landscapes, and SQA only proves superior when the problem’s complexity explicitly demands tunneling-like behavior.

[APS Open Sci. 1, 000067] Published Tue Jul 21, 2026

The impact of disorder on collective phenomena depends crucially on whether it is quenched or annealed. In synchronization problems, quenched disorder in higher-dimensional Kuramoto models is known to produce unconventional dimensional effects, including a striking odd-even dichotomy: Synchronizatio…

[APS Open Sci. 1, 000069] Published Tue Jul 21, 2026

We study the spectral statistics and wave-function properties of a one-dimensional quantum system subject to a Cantor-type fractal potential. By analyzing the nearest-neighbor level spacings, inverse participation ratio (IPR), and the scaling behavior of the integrated density of states (IDS), we de…

[APS Open Sci. 1, 000070] Published Tue Jul 21, 2026

We examine the mechanical and statistical-mechanical structure of interacting particle systems composed of zero-thickness rigid rods with fixed orientations. Despite strong geometric interactions imposed by nonintersection constraints, such systems are expected to exhibit ideal-gas equilibrium behav…

[APS Open Sci. 1, 000068] Published Mon Jul 20, 2026

Conventional acoustic waveguides rely on sound-hard cladding layers to suppress crosstalk and radiation loss, raising fundamental limitations for integration. Here, we demonstrate that such constraints can be released by exploiting boundary-selective wave transport in a glide-symmetry-induced double…

[APS Open Sci. 1, 000066] Published Fri Jul 17, 2026

By implementing a novel quad-tile partitioning strategy on field-programmable gate arrays (FPGAs), researchers have drastically reduced the computational cost scaling of fundamental tensor network algorithms. This highly parallel, hardware-driven approach significantly outperforms traditional CPU computations, opening new pathways for efficient, large-scale simulations of quantum many-body systems.

[APS Open Sci. 1, 000064] Published Thu Jul 16, 2026

Superpositions of orbital angular momentum (OAM) eigenstates form a continuous state space characterized by the complex coefficients of the constituent modes. When such OAM superposition states propagate through a random medium, they produce speckle patterns. The random granular speckle patterns enc…

[APS Open Sci. 1, 000065] Published Thu Jul 16, 2026

Researchers have identified a novel three-dimensional topological phase known as an “anti-higher-order Weyl semimetal,” which uniquely reverses the conventional boundary hierarchy. By mathematically enforcing the systematic absence - rather than the presence - of localized states at specific hinge orientations, this discovery establishes anti-topology as a powerful dual counterpart to the traditional topological paradigm.

[APS Open Sci. 1, L000063] Published Thu Jul 16, 2026

Cooperative magnetic behavior in nanomagnet networks is governed by the interplay between exchange interactions and topology, offering routes for information transmission without charge flow. We show that a magnetic field can drive deterministic domain-wall propagation in a hierarchical, loop-free n…

[APS Open Sci. 1, 000062] Published Wed Jul 15, 2026

This study establishes superconducting-tip scanning tunneling spectroscopy as a probe of Majorana surface states. Using an s-wave superconducting tip, Andreev and shot-noise signals reveal signatures of Majorana surface states and help identify unconventional pairing symmetries, offering a guiding principle for future STM experiments on topological superconductors.

[APS Open Sci. 1, 000061] Published Tue Jul 14, 2026

Atomic interactions play an important role in the properties of ultracold atomic gases. In single-component bosonic systems, its effect is already present at the critical point for the Bose-Einstein condensate phase transition by shifting it to lower temperatures as a consequence of effective repuls…

[APS Open Sci. 1, 000060] Published Mon Jul 13, 2026

We examine the interaction between floating cylindrical objects and surface waves in the gravity regime. Since the impact of resonance phenomena associated with floating bodies, particularly at laboratory scales, remains underexplored, we focus on the influence of the floats’ resonance frequency on …

[APS Open Sci. 1, 000059] Published Thu Jul 09, 2026

This work presents an experimental investigation of the morphological regimes of a two-dimensional granular pile subjected to bulk discharge through a small opening in its lower center. The granular material employed is clean stainless steel spheres of diameter $d=3\mathrm{mm}$, which are poured into a transpa…

[APS Open Sci. 1, 000058] Published Wed Jul 08, 2026

This work presents a digital quantum simulation of a three-level atomic system interacting with a single-mode electromagnetic field based on the Jaynes-Cummings model, implemented on IBM Quantum superconducting processors. A qutrit is encoded using two physical qubits to represent the atomic states,…

[APS Open Sci. 1, 000056] Published Tue Jul 07, 2026

Electric dipole moments (EDMs) are sensitive probes of fundamental symmetries and central to searches for physics beyond the standard model. We present a symmetry-based, Zeeman-analog operator framework that places magnetic and electric dipole physics on parallel footing under electromagnetic dualit…

[APS Open Sci. 1, 000057] Published Tue Jul 07, 2026

Through two-dimensional, three-velocity-component particle-in-cell simulations of freely decaying subion turbulence, intermittent localized regions with $\mathbf{E}·\mathbf{B}\ne 0$ are found, in the early electron-scale interaction phase, to be statistically associated with decreases in $|H_{V_s}|$, the fixed-gauge structure-i…

[APS Open Sci. 1, 000055] Published Mon Jul 06, 2026

When individuals perceive an infection risk and adapt their behavior, it fundamentally alters higher-order contagion dynamics on networks. A new study reveals that risk-based adaptation neutralizes the effects of nonlinear group interactions that normally cause explosive, discontinuous epidemic phase transitions. This suppression effectively reverts the complex higher-order contagion back to a standard pairwise one, with a continuous transition.

[APS Open Sci. 1, L000054] Published Wed Jul 01, 2026

Unconventional superconductivity remains one of the central unsolved problems in quantum materials, and revealing its connection to the normal state is widely believed to be key to uncovering the pairing mechanism. Previous efforts have largely focused on the temperature range immediately above the …

[APS Open Sci. 1, 000053] Published Fri Jun 26, 2026

We theoretically investigate dispersion of plasma waves propagating in a lateral plasmonic crystal based on a two-dimensional electron system with grating gates. Two specific configurations are analyzed: a system with single grating gate having ungated gaps and a double-grating-gate structure. We ca…

[APS Open Sci. 1, 000052] Published Thu Jun 25, 2026

We present an implementation of an atomic magnetometer based on free spin precession of optically pumped ${}^{87}\mathrm{Rb}$ atoms. The design features a microfabricated vapor cell with an effective volume of $7.1{\mathrm{mm}}^3$ containing isotopically enriched ${}^{87}\mathrm{Rb}$ and nitrogen buffer gas. The magnetometer is designed to oper…

[APS Open Sci. 1, 000050] Published Wed Jun 24, 2026

Solitary waves are important phenomena for particle acceleration and energy transport in both astrophysical and laboratory laser plasmas. To investigate their characteristics, we introduce a physics-informed neural network (PINN)-based method to infer the governing partial differential equation that…

[APS Open Sci. 1, 000051] Published Wed Jun 24, 2026

We studied the longitudinal and transverse magnetoresistance of helical magnets, MnSi and ${\mathrm{Mn}}_{1-x}{\mathrm{Co}}_x\mathrm{Si}$, at temperatures between 1.8 and 100 K and in magnetic fields up to 9 T. The helical and conical phases of MnSi show a negative response to low applied magnetic fields at 1.8 and 4 K, which is obviou…

[APS Open Sci. 1, 000048] Published Tue Jun 23, 2026

Short-time approximations and path integrals may be dominated by high-energy or large-field contributions, especially for singular interactions, motivating regulators that suppress such contributions while remaining removable. We show that smooth regulators of this kind can arise as conditional maps…

[APS Open Sci. 1, 000049] Published Tue Jun 23, 2026

Optical tomograms can be envisaged as patterns. The Wasserstein generative adversarial network (WGAN) algorithm provides a platform to train the machine to compare patterns corresponding to input and generated tomograms. Using a deep-learning framework with two convolutional neural networks and WGAN…

[APS Open Sci. 1, 000044] Published Mon Jun 22, 2026

We explicitly show that the quantum teleportation protocol can be employed to completely reconstruct arbitrary two- and three-qubit density matrices. We also extend the present analysis to $n$-qubit density matrices. The only quantum resources needed to implement the teleportation-based quantum state …

[APS Open Sci. 1, 000046] Published Mon Jun 22, 2026

OpenAI’s reasoning model o3-mini-high was used to carry out an exact analytic study of one-dimensional ferrimagnetic site- and bond-decorated $q$-state Potts models. We demonstrate that the finite-temperature ultranarrow phase crossover (UNPC), driven by a hidden “half-ice, half-fire” state recently d…

[APS Open Sci. 1, 000047] Published Mon Jun 22, 2026

Topological quantum computation, featuring qubits built out of anyonic excitations known as Majorana zero modes (MZMs), have long presented an exciting route toward scalable quantum computation. Recently, the advent of altermagnetic materials has presented a pathway toward localized MZMs on the boun…

[APS Open Sci. 1, L000045] Published Mon Jun 22, 2026

We present a general formalism for performing a time-dependent Bogoliubov analysis of a dynamically unstable Bose-Einstein condensate, which extends the quasiparticle projection method of Morgan et al. [Phys. Rev. A 57, 3818 (1998)] to cases with a complex spectrum. By introducing the proper left ei…

[APS Open Sci. 1, 000043] Published Thu Jun 18, 2026

New all-atom simulations reveal that as biomolecular condensates grow, they cross a distinct size threshold that triggers cooperative behaviors, which decreases their solubility and significantly slows their molecular exchange. This emergent complexity demonstrates that these cellular droplets behave less like simple Newtonian fluids and more like structured, viscoelastic networks with unique core-shell dynamics.

[APS Open Sci. 1, 000042] Published Wed Jun 17, 2026

Entangled free electrons constitute a key missing resource for quantum electron optics, with direct relevance to nonclassical electron probes, collective radiation, and quantum-enhanced electron-matter spectroscopy. We propose a heralded protocol for generating Bell pairs of spatially separated free…

[APS Open Sci. 1, 000041] Published Tue Jun 16, 2026

The halide double perovskite ${\mathrm{Cs}}_2{\mathrm{AgBiBr}}_6$ has been proposed as a potential replacement for organic halide perovskites for photovoltaic applications. Further investigation of its dielectric response, optical properties, and structural stability is thus warranted. ${\mathrm{Cs}}_2{\mathrm{AgBiBr}}_6$ exhibits a well-documented s…

[APS Open Sci. 1, 000040] Published Wed Jun 10, 2026

The material ${\mathrm{ZrTe}}_5$ exhibits distinct topological phases, including a Weyl semimetal (WSM) phase, characterized by a chiral anomaly and in-plane Hall effect, and a three-dimensional quantum Hall (3D QH) phase. The relationship between these phases remains poorly understood. This work systematically e…

[APS Open Sci. 1, 000038] Published Tue Jun 09, 2026

A realistic model of a projective quantum measurement is presented that provides a physical justification for the collapse postulate without invoking the macroscopic nature of a detector. The analysis adopts a minimally realist interpretation of the formalism, in which objective reality is ascribed …

[APS Open Sci. 1, 000039] Published Tue Jun 09, 2026

We interpret the $B$-lattice flavor framework as a compositeness hierarchy: all three fermion generations are elementary chiral fields, but third-generation Yukawa couplings are undressed ($Q=0$), while lighter generations acquire their Yukawa couplings through chains of spin-0 subconstituents (“hops”) …

[APS Open Sci. 1, 000037] Published Thu Jun 04, 2026

We propose a technique to investigate multipartite entanglement in the symmetric subspace. Our approach is to map an $N$-qubit symmetric state onto a bipartite symmetric state of higher local dimension. We show that this mapping preserves separability and allows to characterize the entanglement of the…

[APS Open Sci. 1, 000036] Published Wed Jun 03, 2026

Transformer models contain substantial internal redundancy arising from coordinate-dependent representations and continuous symmetries, in model space and in head space, respectively. While recent approaches address this by explicitly breaking symmetry, we propose a complementary framework based on …

[APS Open Sci. 1, 000034] Published Tue Jun 02, 2026

Despite the success of the spin-thermalized assumption in explaining hyperon spin polarizations in relativistic heavy-ion collisions, challenges begin to arise especially at lower collision energies. The present study compares the nucleon spin polarization during the collision process and at the fre…

[APS Open Sci. 1, L000035] Published Tue Jun 02, 2026

Using numerically exact diagrammatic Monte Carlo simulations in the two-electron (single-bipolaron) sector, we explore the impact of long-range Coulomb repulsion on the dilute-limit Berezinskii-Kosterlitz-Thouless transition temperature $T_c$ of bipolarons on a two-dimensional square lattice. We study …

[APS Open Sci. 1, 000033] Published Mon Jun 01, 2026

The magnetoconductance of ${\mathrm{Ti}}_3{\mathrm{C}}_2{\mathrm{T}}_x$ MXene thin films under both perpendicular and parallel magnetic fields is systematically investigated to elucidate how finite thickness impacts weak localization (WL). In thicker films ($\sim 700\mathrm{nm}$), the magnetoconductance is nearly orientation independent, indicating a …

[APS Open Sci. 1, 000031] Published Fri May 29, 2026

We explore the helical quantum two-body problem, i.e., two repulsively Coulomb interacting particles confined to move along a helix. The effective potential possesses a tunable number of potential wells superimposed on the repulsive Coulomb interaction that can be varied by changing the ratio of the…

[APS Open Sci. 1, 000032] Published Fri May 29, 2026

Terraforming Mars can be evaluated with system-level constraints linking target pressure and composition to volatile inventory, target temperature to radiative control, climate agents to throughput and power, and persistence to collapse, escape, and geochemical sinks. We use transparent order-of-mag…

[APS Open Sci. 1, 000029] Published Thu May 28, 2026

The transition to synchrony in the Kuramoto model of globally coupled phase oscillators with a uniform distribution of natural frequencies is discontinuous. We extend the theory of this transition to the Kuramoto-Sakaguchi model, taking into account a phase shift in coupling. In the thermodynamic li…

[APS Open Sci. 1, 000030] Published Thu May 28, 2026

We investigate the interplay between altermagnetic band structures and electronic correlations by focusing on the $d_{x^2-y^2}$ altermagnetic generalization of the Hatsugai-Kohmoto model. We find that with increasing interaction, a many-body Lifshitz transition takes place when doubly occupied regions disa…

[APS Open Sci. 1, 000025] Published Tue May 26, 2026

Hybrid light-matter systems provide a powerful route to distributing quantum correlations across scalable architectures. Here, we investigate tripartite entanglement in a driven-dissipative system composed of two evanescently coupled optical resonators, one of which interacts with a two-level atom b…

[APS Open Sci. 1, 000026] Published Tue May 26, 2026

Cavity magnonics, owing to its strong magnon-photon coupling and excellent tunability, has attracted significant interest in quantum information science. However, achieving strong and robust macroscopic entanglement remains a long-standing challenge due to the inherently linear nature of the beam-sp…

[APS Open Sci. 1, 000027] Published Tue May 26, 2026

In modern interconnected societies, opinions and beliefs can quickly spread across large populations, giving rise to collective behaviors such as the adoption of social norms or polarization. The interest in these phenomena led to the formulation of many models aiming at reproducing relevant emergen…

[APS Open Sci. 1, 000028] Published Tue May 26, 2026

Quantum systems achieve objectivity by redundantly encoding information about themselves into the surrounding environment, through a mechanism known as quantum Darwinism. When this happens, observers measure the environment and infer the system to be in one of its pointer states. We study the emerge…

[APS Open Sci. 1, 000024] Published Fri May 22, 2026

Twisted light carries orbital angular momentum (OAM) and can drive excitations of confined, interacting electrons that are dark to uniform dipolar probes. Here, we show how this “beyond-Kohn's-theorem” optical channel can become a concrete control primitive for quantum computing. Correlation sectors…

[APS Open Sci. 1, 000023] Published Tue May 19, 2026

Quantitative evaluation of magnetic moment distributions in microstructures with high spatial resolution is essential to advance the development of next-generation spintronic devices. In this study, we successfully imaged the magnetic domain structure of micropatterned subnanometer thin films by com…

[APS Open Sci. 1, L000022] Published Tue May 19, 2026

We investigate the dynamics of a run-and-tumble particle in a double-well potential and demonstrate that, in stark contrast to Brownian particles, active dynamics can lead to strong ergodicity breaking. When the barrier height exceeds a critical threshold, the long-time position distribution depends…

[APS Open Sci. 1, 000021] Published Mon May 18, 2026