We experimentally study quasi-two-dimensional dilute granular flow around intruders whose shape, size, and relative impact speed are systematically varied. Direct measurement of the flow field reveals that three in-principle independent measurements of the nonuniformity of the flow field are in fact...

[Phys. Rev. E 95, 060901(R)] Published Fri Jun 23, 2017

]]>A data-science approach to solving the ill-conditioned inverse problem for analytical continuation is proposed. The root of the problem lies in the fact that even tiny noise of imaginary-time input data has a serious impact on the inferred real-frequency spectra. By means of a modern regularization ...

[Phys. Rev. E 95, 061302(R)] Published Wed Jun 21, 2017

]]>We use lattice-Boltzmann and analytical calculations to investigate transient hydrodynamic finite-size effects induced by the use of periodic boundary conditions. These effects are inevitable in simulations at the molecular, mesoscopic, or continuum levels of description. We analyze the transient re...

[Phys. Rev. E 95, 061301(R)] Published Tue Jun 20, 2017

]]>We use large-scale computer simulations to explore the nonequilibrium aging dynamics in a microscopic model for colloidal gels. We find that gelation resulting from a kinetically arrested phase separation is accompanied by “anomalous” particle dynamics revealed by superdiffusive particle motion and ...

[Phys. Rev. E 95, 060601(R)] Published Thu Jun 15, 2017

]]>One of the most basic characterizations of the relationship between two random variables, $X$ and $Y$, is the value of their mutual information. Unfortunately, calculating it analytically and estimating it empirically are often stymied by the extremely large dimension of the variables. One might hope to...

[Phys. Rev. E 95, 060102(R)] Published Tue Jun 13, 2017

]]>Shifting our electricity generation from fossil fuel to renewable energy sources introduces large fluctuations to the power system. Here, we demonstrate how increased fluctuations, reduced damping, and reduced intertia may undermine the dynamical robustness of power grid networks. Focusing on fundam...

[Phys. Rev. E 95, 060203(R)] Published Fri Jun 09, 2017

]]>A fundamental issue in analyzing diffusion in heterogeneous media is interpreting the space dependence of the associated diffusion coefficient. This reflects the well-known Ito-Stratonovich dilemma for continuous stochastic processes with multiplicative noise. In order to resolve this dilemma it is ...

[Phys. Rev. E 95, 060101(R)] Published Tue Jun 06, 2017

]]>Ionic liquids are solvent-free electrolytes, some of which possess an intriguing self-assembly at finite length scale due to Coulombic interactions. Using a continuum framework (based on Onsager's relations), it is shown that bulk nanostructures arise via linear (supercritical) and nonlinear (subcri...

[Phys. Rev. E 95, 060201(R)] Published Fri Jun 02, 2017

]]>The equilibrium value of an observable defines a manifold in the phase space of an ergodic and equipartitioned many-body system. A typical trajectory pierces that manifold infinitely often as time goes to infinity. We use these piercings to measure both the relaxation time of the lowest frequency ei...

[Phys. Rev. E 95, 060202(R)] Published Fri Jun 02, 2017

]]>Through experiments and numerical simulations we explore the behavior of rf SQUID (radio frequency superconducting quantum interference device) metamaterials, which show extreme tunability and nonlinearity. The emergent electromagnetic properties of this metamaterial are sensitive to the degree of c...

[Phys. Rev. E 95, 050201(R)] Published Tue May 30, 2017

]]>Scientific explanation often requires inferring maximally predictive features from a given data set. Unfortunately, the collection of minimal maximally predictive features for most stochastic processes is uncountably infinite. In such cases, one compromises and instead seeks nearly maximally predict...

[Phys. Rev. E 95, 051301(R)] Published Thu May 25, 2017

]]>We make use of discrete-element-method numerical simulations of inelastic frictionless cylinders in simple shearing at different length-to-diameter ratios and solid volume fractions to analyze the rate of collisional dissipation of the fluctuation kinetic energy. We show that the nonspherical geomet...

[Phys. Rev. E 95, 050901(R)] Published Wed May 24, 2017

]]>We apply the concept of a frequency-dependent effective temperature based on the fluctuation-dissipation ratio to a driven Brownian particle in a nonequilibrium steady state. Using this system as a thermostat for a weakly coupled harmonic oscillator, the oscillator thermalizes according to a canonic...

[Phys. Rev. E 95, 050103(R)] Published Mon May 22, 2017

]]>It has been broadly accepted that the behavior of glass-forming liquids, where their relaxation dynamics exhibit a pronounced slowdown as they are cooled toward the glass transition temperature, is caused by the increase in one or more correlation lengths. However, the role of length scales in the d...

[Phys. Rev. E 95, 050601(R)] Published Mon May 15, 2017

]]>The work distribution is a fundamental quantity in nonequilibrium thermodynamics mainly due to its connection with fluctuation theorems. Here, we develop a semiclassical approximation to the work distribution for a quench process in chaotic systems that provides a link between the quantum and classi...

[Phys. Rev. E 95, 050102(R)] Published Fri May 12, 2017

]]>It is known that unconfined dust explosions typically start off with a relatively weak primary flame followed by a severe secondary explosion. We show that clustering of dust particles in a temperature stratified turbulent flow ahead of the primary flame may give rise to a significant increase in th...

[Phys. Rev. E 95, 051101(R)] Published Fri May 12, 2017

]]>A series of direct-drive implosions performed on OMEGA were used to isolate the effect of an adiabat on the in-flight shell thickness. The maximum in-flight shell thickness was measured to decrease from $75\pm 2$ to $60\pm 2\phantom{\rule{0.28em}{0ex}}\mu \mathrm{m}$ when the adiabat of the shell was reduced from 6 to 4.5, but when decreasing the a...

[Phys. Rev. E 95, 051202(R)] Published Wed May 10, 2017

]]>Plasma high-order-harmonic generation from an extremely intense short-pulse laser is explored by including the effects of ion motion, electron-ion collisions, and radiation reaction force in the plasma dynamics. The laser radiation pressure induces plasma ion motion through the hole-boring effect, r...

[Phys. Rev. E 95, 051201(R)] Published Mon May 08, 2017

]]>Advanced chain-growth computer simulation methodologies have been employed for a systematic statistical analysis of the critical behavior of a polymer adsorbing at a substrate. We use finite-size scaling techniques to investigate the solvent-quality dependence of critical exponents, critical tempera...

[Phys. Rev. E 95, 050501(R)] Published Thu May 04, 2017

]]>We study the statistics of the power $P$ dissipated by waves propagating in a one-dimensional disordered medium with damping coefficient $\nu $. An operator imposes the wave amplitude at one end, therefore injecting a power $P$ that balances dissipation. The typical realization of $P$ vanishes for $\nu \to 0$: Disorde...

[Phys. Rev. E 95, 050101(R)] Published Wed May 03, 2017

]]>The mathematical framework of multiplex networks has been increasingly realized as a more suitable framework for modeling real-world complex systems. In this work, we investigate the optimization of synchronizability in multiplex networks by evolving only one layer while keeping other layers fixed. ...

[Phys. Rev. E 95, 040301(R)] Published Thu Apr 27, 2017

]]>Although redistribution of red blood cells at bifurcated vessels is highly dependent on flow rate, it is still challenging to quantitatively express the dependence of flow rate in plasma skimming due to nonlinear cellular interactions. We suggest a plasma skimming model that can involve the effect o...

[Phys. Rev. E 95, 040401(R)] Published Tue Apr 25, 2017

]]>We study a complex plasma under microgravity conditions that is first stabilized with an oscillating electric field. Once the stabilization is stopped, the so-called heartbeat instability develops. We study how the kinetic energy spectrum changes during and after the onset of the instability and com...

[Phys. Rev. E 95, 041201(R)] Published Mon Apr 10, 2017

]]>Thorough numerical studies reveal that spatially extended dissipative systems with long-range interactions may give rise to a large-scale dynamics. This phenomenon, which generalizes mean-field chaos, can be interpreted as a form of subtle pattern formation, where a chaotic microscopic dynamics coex...

[Phys. Rev. E 95, 040201(R)] Published Mon Apr 03, 2017

]]>We show that chimera states, where differentiated subsets of synchronized and desynchronized dynamical elements coexist, can emerge in networks of hyperbolic chaotic oscillators subject to global interactions. As local dynamics we employ Lozi maps, which possess hyperbolic chaotic attractors. We con...

[Phys. Rev. E 95, 030202(R)] Published Fri Mar 31, 2017

]]>Suspensions of cornstarch in water exhibit strong dynamic shear thickening. We show that partly replacing water with ethanol strongly alters the suspension rheology. We perform steady and nonsteady rheology measurements combined with atomic force microscopy to investigate the role of fluid chemistry...

[Phys. Rev. E 95, 030602(R)] Published Fri Mar 31, 2017

]]>Measurements of hydrodynamic instability growth for a high-density carbon ablator for indirectly driven inertial confinement fusion implosions on the National Ignition Facility are reported. We observe significant unexpected features on the capsule surface created by shadows of the capsule fill tube...

[Phys. Rev. E 95, 031204(R)] Published Thu Mar 30, 2017

]]>We numerically examine clogging transitions for bidisperse disks flowing through a two-dimensional periodic obstacle array. We show that clogging is a probabilistic event that occurs through a transition from a homogeneous flowing state to a heterogeneous or phase-separated jammed state where the di...

[Phys. Rev. E 95, 030902(R)] Published Wed Mar 29, 2017

]]>A calculation which describes the spin-up of toroidal plasmas by the radial propagation of turbulence fronts with broken parallel symmetry is presented. The associated flux of parallel momentum is calculated by using a two-scale direct-interaction approximation in the weak turbulence limit. We show ...

[Phys. Rev. E 95, 031203(R)] Published Wed Mar 29, 2017

]]>Recommender systems play an essential role in the modern business world. They recommend favorable items such as books, movies, and search queries to users based on their past preferences. Applying similar ideas and techniques to Monte Carlo simulations of physical systems boosts their efficiency wit...

[Phys. Rev. E 95, 031301(R)] Published Wed Mar 29, 2017

]]>We propose a model of superdiffusive Lévy walk as an emergent nonlinear phenomenon in systems of interacting individuals. The aim is to provide a qualitative explanation of recent experiments [G. Ariel *et al.*, Nat. Commun. **6**, 8396 (2015)] revealing an intriguing behavior: swarming bacteria fundamen...

[Phys. Rev. E 95, 030107(R)] Published Tue Mar 28, 2017

]]>We model a set of point-to-point transports on a network as a system of polydisperse interacting self-avoiding walks (SAWs) over a finite square lattice. The ends of each SAW may be located both at random, uniformly distributed, positions or with one end fixed at a lattice corner. The total energy o...

[Phys. Rev. E 95, 030108(R)] Published Tue Mar 28, 2017

]]>The robustness of spatial patterns against perturbations is an indispensable property of developmental processes for organisms, which need to adapt to changing environments. Although specific mechanisms for this robustness have been extensively investigated, little is known about a general mechanism...

[Phys. Rev. E 95, 030201(R)] Published Fri Mar 24, 2017

]]>In recent work it was clarified that amorphous solids under strain control do not possess nonlinear elastic theory in the sense that the shear modulus exists but nonlinear moduli exhibit sample-to-sample fluctuations that grow without bound with the system size. More relevant, however, for experimen...

[Phys. Rev. E 95, 031001(R)] Published Fri Mar 24, 2017

]]>A general scheme is derived to connect transitions in configuration space with features in the heat capacity. A formulation in terms of occupation probabilities for local minima that define the potential energy landscape provides a quantitative description of how contributions arise from competition...

[Phys. Rev. E 95, 030105(R)] Published Wed Mar 22, 2017

]]>We consider a spring-block model with both dry and viscous frictions, subjected to a periodic driving allowing mechanically stable configurations to be sampled. We show that under strong driving, the scaling of the correlation length with the energy density is incompatible with the prediction of the...

[Phys. Rev. E 95, 030106(R)] Published Wed Mar 22, 2017

]]>Recently, it was shown that the probability distribution function (PDF) of the free energy of a single continuum directed polymer (DP) in a random potential, equivalently to the height of a growing interface described by the Kardar-Parisi-Zhang (KPZ) equation, converges at large scale to the Tracy-W...

[Phys. Rev. E 95, 030103(R)] Published Tue Mar 21, 2017

]]>Motivated by the demand for efficient quantum devices to engineer energy transport, we analyze some inhomogeneous quantum spin systems, including $XXZ$ chains, with magnetization baths at the ends. With a goal of finding general properties, we study the effects of suitable transformations on the bound...

[Phys. Rev. E 95, 030104(R)] Published Tue Mar 21, 2017

]]>The collective behavior of vibrated hexagonal disks confined in a monolayer is investigated experimentally. Due to the broken circular symmetry, hexagons prefer to rotate upon sufficiently strong driving. Due to the formation of liquid bridges, short-ranged cohesive interactions are introduced upon ...

[Phys. Rev. E 95, 030901(R)] Published Mon Mar 20, 2017

]]>Octahedral spherical hohlraums with a single laser ring at an injection angle of ${55}^{\circ}$ are attractive concepts for laser indirect drive due to the potential for achieving the x-ray drive symmetry required for high convergence implosions. Laser-plasma instabilities, however, are a concern given the lon...

[Phys. Rev. E 95, 031202(R)] Published Mon Mar 20, 2017

]]>The deformation and fragmentation of liquid metal microdroplets by intense subpicosecond Ti:sapphire laser pulses is experimentally studied with stroboscopic shadow photography. The experiments are performed at a peak intensity of ${10}^{14}\phantom{\rule{0.16em}{0ex}}\mathrm{W}/\mathrm{c}{\mathrm{m}}^{2}$ at the target's surface, which produces shock waves with pr...

[Phys. Rev. E 95, 031101(R)] Published Fri Mar 17, 2017

]]>We present a self-contained engine, which is made of one or more two-level systems, each of which is coupled to a single bath, as well as to a common load composed of a particle on a tilted lattice. We show that an increase in time of energy and entropy in the system composed of the spins and the pa...

[Phys. Rev. E 95, 030102(R)] Published Thu Mar 16, 2017

]]>We show that current fluctuations in a stochastic pump can be robustly mapped to fluctuations in a corresponding time-independent nonequilibrium steady state. We thus refine a recently proposed mapping so that it ensures equivalence of not only the averages, but also optimal representation of fluctu...

[Phys. Rev. E 95, 030101(R)] Published Wed Mar 15, 2017

]]>We present equation of state (EOS) measurements of solid-density copper heated to 5–10 eV. A copper sample was heated isochorically by hydrogen ions accelerated from an adjacent foil by a high intensity pulsed laser, and probed optically. The measured temperature and expansion are compared against s...

[Phys. Rev. E 95, 031201(R)] Published Mon Mar 13, 2017

]]>We investigate the hydrodynamic fluctuations in suspensions of swimming microorganisms (*Chlamydomonas*) by observing the probe particles dispersed in the media. Short-term fluctuations of probe particles were superdiffusive and displayed heavily tailed non-Gaussian distributions. The analytical theor...

[Phys. Rev. E 95, 030601(R)] Published Thu Mar 09, 2017

]]>This paper describes the behavior of Taylor-Couette flows at large Reynolds numbers and shows the onset of a linear instability in this extreme regime. The instability also appears in flows where the square of the angular momentum is increasing outward from the axis of rotation and which are stable according to the inviscid Rayleigh criterion.

[Phys. Rev. E 95, 021102(R)] Published Tue Feb 28, 2017

]]>We present a semiclassical prediction of regular-to-chaotic tunneling in systems with a mixed phase space, including the effect of a nonlinear resonance chain. We identify complex paths for direct and resonance-assisted tunneling in the phase space of an integrable approximation with one nonlinear r...

[Phys. Rev. E 95, 020202(R)] Published Mon Feb 27, 2017

]]>Spatially extended systems can support local transient excitations in which just a part of the system is excited. The mechanisms reported so far are local excitability and excitation of a localized structure. Here we introduce an alternative mechanism based on the coexistence of two homogeneous stab...

[Phys. Rev. E 95, 020201(R)] Published Thu Feb 23, 2017

]]>The neutron-spin-echo method (NSE) is a powerful technique for studying internal dynamics of macromolecules in solutions because it can simultaneously probe length and time scales comparable to intramolecular density fluctuations of macromolecules. Recently, there has been increased, strong interest...

[Phys. Rev. E 95, 020501(R)] Published Thu Feb 16, 2017

]]>Understanding fundamental growth processes is key to the control of nonequilibrium structure formation for a wide range of materials on all length scales, from atomic to molecular and even colloidal systems. While atomic systems are relatively well studied, molecular and colloidal growth are current...

[Phys. Rev. E 95, 020801(R)] Published Mon Feb 13, 2017

]]>Using the largest database of isotropic turbulence available to date, generated by the direct numerical simulation (DNS) of the Navier-Stokes equations on an ${8192}^{3}$ periodic box, we show that the longitudinal and transverse velocity increments scale identically in the inertial range. By examining the...

[Phys. Rev. E 95, 021101(R)] Published Fri Feb 10, 2017

]]>We explore the effect of interplay of interfacial noise and curvature-driven dynamics in a binary spin system. An appropriate model is the generalized two-dimensional voter model proposed earlier [M. J. de Oliveira, J. F. F. Mendes, and M. A. Santos, J. Phys. A: Math. Gen. **26**, 2317 (1993)], where th...

[Phys. Rev. E 95, 020101(R)] Published Tue Feb 07, 2017

]]>We study the collective dynamics of elongated swimmers in a very thin fluid layer by devising long filamentous nontumbling bacteria. The strong confinement induces weak nematic alignment upon collision, which, for large enough density of cells, gives rise to global nematic order. This homogeneous bu...

[Phys. Rev. E 95, 020601(R)] Published Tue Feb 07, 2017

]]>We present simulations of a three-dimensional percolation model studied recently by K. J. Schrenk *et al.* [Phys. Rev. Lett. **116**, 055701 (2016)], obtained with a new and more efficient algorithm. They confirm most of their results in spite of larger systems and higher statistics used in the present Ra...

[Phys. Rev. E 95, 010103(R)] Published Mon Jan 23, 2017

]]>We demonstrate that chimera behavior can be observed in small networks consisting of three identical oscillators, with mutual all-to-all coupling. Three different types of chimeras, characterized by the coexistence of two coherent oscillators and one incoherent oscillator (i.e., rotating with anothe...

[Phys. Rev. E 95, 010203(R)] Published Fri Jan 20, 2017

]]>We define a “$k$-booklet” to be a set of $k$ semi-infinite planes with $-\infty <x<\infty $ and $y\ge 0$, glued together at the edges (the “spine”) $y=0$. On such booklets we study three critical phenomena: self-avoiding random walks, the Ising model, and percolation. For $k=2$, a booklet is equivalent to a single infin...

[Phys. Rev. E 95, 010102(R)] Published Thu Jan 19, 2017

]]>Multistable systems exhibit a rich front dynamics between equilibria. In one-dimensional scalar gradient systems, the spread of the fronts is proportional to the energy difference between equilibria. Fronts spreading proportionally to the energetic difference between equilibria is a characteristic o...

[Phys. Rev. E 95, 010202(R)] Published Tue Jan 17, 2017

]]>The spanning cluster properties of a percolation model with nucleation and preferential growth exhibit first-order transitions depending on the values of the growth parameter ${g}_{0}$ and the initial seed concentration $\rho $. Except for the preferential growth of smaller clusters with a size-dependent growth ...

[Phys. Rev. E 95, 010101(R)] Published Mon Jan 09, 2017

]]>We address the long-standing challenge of how to reconstruct links in directed networks from measurements, and present a general method that makes use of a noise-induced relation between network structure and both the time-lagged covariance of measurements taken at two different times and the covari...

[Phys. Rev. E 95, 010301(R)] Published Thu Jan 05, 2017

]]>An array of excitable Josephson junctions under a global mean-field interaction and a common periodic forcing shows the emergence of two important classes of coherent dynamics, librational and rotational motion, in the weaker and stronger coupling limits, respectively, with transitions to chimeralik...

[Phys. Rev. E 95, 010201(R)] Published Wed Jan 04, 2017

]]>We introduce a minimal geometric partial differential equation framework to understand pattern formation from interacting, counterpropagating fronts. Our approach concentrates on the interfaces between different states in a system, and relies on both nonlocal interactions and mean-curvature flow to ...

[Phys. Rev. E 94, 060401(R)] Published Thu Dec 29, 2016

]]>Detailed analysis of the static structure factor $S\left(Q\right)$ in several glass-forming liquids reveals that the temperature variations of the width of the main diffraction peak $\mathrm{\Delta}Q\left(T\right)$ correlate with the fragility of these liquids. This observation suggests a direct connection between rather subtle structural...

[Phys. Rev. E 94, 060603(R)] Published Thu Dec 29, 2016

]]>*In vitro* reconstituted active systems, such as the adenosine triphosphate (ATP)-driven microtubule bundle suspension developed by the Dogic group [T. Sanchez, D. T. Chen, S. J. DeCamp, M. Heymann, and Z. Dogic, Nature (London) **491**, 431 (2012)], provide a fertile testing ground for elucidating the ph...

[Phys. Rev. E 94, 060602(R)] Published Wed Dec 28, 2016

]]>We study the relation between flow structure and fluid deformation in steady flows through two-dimensional heterogeneous media, which are characterized by a broad spectrum of stretching behaviors, ranging from sub- to superlinear. We analyze these behaviors from first principles, which uncovers inte...

[Phys. Rev. E 94, 061102(R)] Published Tue Dec 27, 2016

]]>We show that the Bayesian inference of recently measured x-ray diffraction spectra from laser-shocked aluminum [L. B. Fletcher *et al.*, Nat. Photon. **9**, 274 (2015)] with the one-component-plasma (OCP) model performs remarkably well at estimating the ionic density and temperature. This statistical app...

[Phys. Rev. E 94, 061202(R)] Published Tue Dec 27, 2016

]]>We characterize the properties of the asymptotic stage of modulational instability arising from localized perturbations of a constant background, including the number and location of the individual peaks in the oscillation region. We show that, for long times, the solution tends to an ensemble of cl...

[Phys. Rev. E 94, 060201(R)] Published Fri Dec 23, 2016

]]>A point source on a plane constantly emits particles which rapidly diffuse and then stick to a growing cluster. The growth probability of a cluster is presented as a sum over all possible scenarios leading to the same final shape. The classical point for the action, defined as a minus logarithm of t...

[Phys. Rev. E 94, 060103(R)] Published Mon Dec 19, 2016

]]>We present an exact mathematical framework able to describe site-percolation transitions in real multiplex networks. Specifically, we consider the average percolation diagram valid over an infinite number of random configurations where nodes are present in the system with given probability. The appr...

[Phys. Rev. E 94, 060301(R)] Published Fri Dec 16, 2016

]]>Molecular dynamic simulations are performed to reveal the long-time behavior of the velocity autocorrelation function (VAF) by utilizing the finite-size effect in a Lennard-Jones binary mixture. Whereas in normal liquids the classical positive ${t}^{-3/2}$ long-time tail is observed, we find in supercooled...

[Phys. Rev. E 94, 060601(R)] Published Thu Dec 15, 2016

]]>The temperature dependence of the orientational order parameters $\langle {P}_{2}\left(\mathrm{cos}\beta \right)\rangle $ and $\langle {P}_{4}\left(\mathrm{cos}\beta \right)\rangle $ in the nematic ($N$) and twist-bend nematic $\left({N}_{\mathrm{tb}}\right)$ phases of the liquid crystal dimer CB7CB have been measured using x-ray and polarized Raman scattering. The $\langle {P}_{2}\left(\mathrm{cos}\beta \right)\rangle $ obtained from both techniques are the same...

[Phys. Rev. E 94, 060701(R)] Published Tue Dec 13, 2016

]]>We study the discrete time dynamics of Brownian ratchet models and Parrondo's games. Using the Fourier transform, we calculate the exact probability distribution functions for both the capital dependent and history dependent Parrondo's games. In certain cases we find strong oscillations near the max...

[Phys. Rev. E 94, 060102(R)] Published Mon Dec 12, 2016

]]>We report an experimental observation of a phase-flip transition in the frequency synchronization of two dc glow discharge plasma sources that are coupled in a noninvasive fashion. When the fundamental oscillation frequency of the potential fluctuations of one of the sources is progressively increas...

[Phys. Rev. E 94, 061201(R)] Published Thu Dec 08, 2016

]]>For many organisms, the number of sensory neurons is largely determined during development, before strong environmental cues are present. This is despite the fact that environments can fluctuate drastically both from generation to generation and within an organism's lifetime. How can organisms get b...

[Phys. Rev. E 94, 060101(R)] Published Wed Dec 07, 2016

]]>It is shown that the truncated Euler equation (TEE), i.e., a finite set of ordinary differential equations for the amplitude of the large-scale modes, can correctly describe the complex transitional dynamics that occur within the turbulent regime of a confined two-dimensional flow obeying Navier-Sto...

[Phys. Rev. E 94, 061101(R)] Published Thu Dec 01, 2016

]]>Amorphous media at finite temperatures, be them liquids, colloids, or glasses, are made of interacting particles that move chaotically due to thermal energy, continuously colliding and scattering off each other. When the average configuration in these systems relaxes only at long times, one can intr...

[Phys. Rev. E 94, 051001(R)] Published Tue Nov 29, 2016

]]>Structural transitions are examined in quasi-one-dimensional systems of freely rotating hard squares, which are confined between two parallel walls. We find two competing phases: one is a fluid where the squares have two sides parallel to the walls, while the second one is a solidlike structure with...

[Phys. Rev. E 94, 050603(R)] Published Mon Nov 28, 2016

]]>We report extensive numerical simulations of growth models belonging to the nonlinear molecular beam epitaxy (nMBE) class, on *flat* (fixed-size) and *expanding* substrates (ES). In both $d=1+1$ and $2+1$, we find that growth regime height distributions (HDs), and spatial and temporal covariances are univer...

[Phys. Rev. E 94, 050801(R)] Published Mon Nov 28, 2016

]]>The helical magnetorotational instability is known to work for resistive rotational flows with comparably steep negative or extremely steep positive shear. The corresponding lower and upper Liu limits of the shear are continuously connected when some axial electrical current is allowed to flow throu...

[Phys. Rev. E 94, 051203(R)] Published Wed Nov 23, 2016

]]>We study self-propelled particles with velocity reversal interacting by uniaxial (nematic) alignment within a coarse-grained hydrodynamic theory. Combining analytical and numerical continuation techniques, we show that the physics of this active system is essentially controlled by the reversal frequ...

[Phys. Rev. E 94, 050602(R)] Published Tue Nov 22, 2016

]]>This Rapid Communication sets forth the mechanism by which mesoscale staircase structures condense to form macroscopic states of enhanced confinement. Density, vorticity, and turbulent potential enstrophy are the variables for this model. Formation of the staircase structures is due to inhomogeneous...

[Phys. Rev. E 94, 051202(R)] Published Fri Nov 18, 2016

]]>Using the diagrammatic method, we derive a set of self-consistent equations that describe eigenvalue distributions of large correlated asymmetric random matrices. The matrix elements can have different variances and be correlated with each other. The analytical results are confirmed by numerical sim...

[Phys. Rev. E 94, 050101(R)] Published Thu Nov 17, 2016

]]>We have studied the folding of ribonuclease A by mapping it onto coarse-grained lattice protein models. With replica exchange Wang-Landau sampling, we calculated the free energy vs end-to-end distance as a function of temperature. A mapping to the famous hydrophobic-polar (HP) model shows a relative...

[Phys. Rev. E 94, 050402(R)] Published Tue Nov 15, 2016

]]>We present a general method of utilizing bioelectric recordings from a spatially sparse electrode grid to compute a dynamic vector field describing the underlying propagation of electrical activity. This vector field, termed the wave-front flow field, permits quantitative analysis of the magnitude o...

[Phys. Rev. E 94, 050401(R)] Published Wed Nov 09, 2016

]]>We report experimental results and simulations showing efficient laser energy coupling into plasmas at conditions relevant to the magnetized liner inertial fusion (MagLIF) concept. In MagLIF, to limit convergence and increase the hydrodynamic stability of the implosion, the fuel must be efficiently ...

[Phys. Rev. E 94, 051201(R)] Published Wed Nov 02, 2016

]]>We use space-charge (SC) theory (also called the capillary pore model) to describe the ionic conductance, $G$, of charged carbon nanotubes (CNTs). Based on the reversible adsorption of hydroxyl ions to CNT pore walls, we use a Langmuir isotherm for surface ionization and make calculations as a functio...

[Phys. Rev. E 94, 050601(R)] Published Tue Nov 01, 2016

]]>Gelation transitions in a colloidal system, where there is a strong reversible attraction between small, soft microgels and large, hard spheres, are systematically investigated. Different from widely studied depletion attraction systems that are also two-component systems, the strong attraction betw...

[Phys. Rev. E 94, 040601(R)] Published Mon Oct 31, 2016

]]>A kinetic equation for a dilute gas of hard spheres confined between two parallel plates separated a distance smaller than two particle diameters is derived. It is a Boltzmann-like equation, which incorporates the effect of the confinement on the particle collisions. A function $S\left(t\right)$ is constructed b...

[Phys. Rev. E 94, 040103(R)] Published Thu Oct 27, 2016

]]>Reconstructing the structural connectivity between interacting units from observed activity is a challenge across many different disciplines. The fundamental first step is to establish whether or to what extent the interactions between the units can be considered pairwise and, thus, can be modeled a...

[Phys. Rev. E 94, 040301(R)] Published Thu Oct 27, 2016

]]>The roles that metal ions play in the structure and dynamics of RNA molecules are long-standing problems that have been studied extensively but are still not well understood. Here we show that metal ions have distributions around RNA molecules that strongly depend on the types and concentrations of ...

[Phys. Rev. E 94, 040401(R)] Published Mon Oct 24, 2016

]]>We show that critical Casimir effects can be accessed through direct simulation of a model binary fluid passing through the demixing transition. We work in the semi-grand-canonical ensemble, in slab geometry, in which the Casimir force appears as the excess of the generalized pressure, ${P}_{\perp}-n\mu $. The ex...

[Phys. Rev. E 94, 040102(R)] Published Fri Oct 21, 2016

]]>Crook's fluctuation theorem (CFT) and Jarzynski equality (JE) are effective tools for obtaining free-energy difference $\mathrm{\Delta}F({\lambda}_{A}\to {\lambda}_{B},{T}_{0})$ through a set of finite-time protocol driven nonequilibrium transitions between two equilibrium states $A$ and $B$ [parametrized by the time-varying protocol $\lambda \left(t\right)$] at the s...

[Phys. Rev. E 94, 040101(R)] Published Thu Oct 20, 2016

]]>Channel flow, the pressure driven flow between parallel plates, has exact coherent structures that show various degrees of localization. For states which are localized in streamwise direction but extended in spanwise direction, we show that they are exponentially localized, with decay constants that...

[Phys. Rev. E 94, 041101(R)] Published Fri Oct 14, 2016

]]>We calculate the distribution of the size of the percolating cluster on a tree in the subcritical, critical, and supercritical phase. We do this by exploiting a mapping between continuum trees and Brownian excursions, and arrive at a diffusion equation with suitable boundary conditions. The exact so...

[Phys. Rev. E 94, 030102(R)] Published Fri Sep 30, 2016

]]>I report on experiments demonstrating the appearance of Wood's anomalies in surface gravity waves propagating along a channel with a submerged obstacle. Space-time measurements of surface gravity waves allow one to compute the stationary complex field of the wave and the amplitude growth of localize...

[Phys. Rev. E 94, 031101(R)] Published Fri Sep 30, 2016

]]>Symmetries constrain dynamics. We test this fundamental physical principle, experimentally and by molecular dynamics simulations, for a hot Janus swimmer operating far from thermal equilibrium. Our results establish scalar and vectorial steady-state fluctuation theorems and a thermodynamic uncertain...

[Phys. Rev. E 94, 030602(R)] Published Thu Sep 29, 2016

]]>The question of how stiff polymers are able to pack into small containers is particularly relevant to the study of DNA packaging in viruses. A reduced version of the problem based on coarse-grained representations of the main components of the system—the DNA polymer and the spherical viral capsid—ha...

[Phys. Rev. E 94, 030401(R)] Published Wed Sep 28, 2016

]]>We present an approach for modeling nanoscale wetting and dewetting of textured solid surfaces that exploits recently developed, sophisticated techniques for computing exact long-range dispersive van der Waals (vdW) or (more generally) Casimir forces in arbitrary geometries. We apply these technique...

[Phys. Rev. E 94, 030801(R)] Published Thu Sep 22, 2016

]]>We present a rigorous efficient event-chain Monte Carlo algorithm for long-range interacting particle systems. Using a cell-veto scheme within the factorized Metropolis algorithm, we compute each single-particle move with a fixed number of operations. For slowly decaying potentials such as Coulomb i...

[Phys. Rev. E 94, 031302(R)] Published Wed Sep 21, 2016

]]>The structural properties of liquid silica at high pressure and moderate temperature conditions, also referred to as the warm dense matter regime, were investigated using time-resolved $K$-edge x-ray absorption spectroscopy and *ab initio* calculations. We used a nanosecond laser beam to compress unifor...

[Phys. Rev. E 94, 031201(R)] Published Fri Sep 16, 2016

]]>We propose an efficient Monte Carlo method for the computation of the volumes of high-dimensional bodies with arbitrary shape. We start with a region of known volume within the interior of the manifold and then use the multistate Bennett acceptance-ratio method to compute the dimensionless free-ener...

[Phys. Rev. E 94, 031301(R)] Published Thu Sep 15, 2016

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