We examine fluctuations in particle density in the restricted-height, conserved stochastic sandpile (CSS). In this and related models, the global particle density is a temperaturelike control parameter. Thus local fluctuations in this density correspond to disorder; if this disorder is a relevant pe…

[Phys. Rev. E 92, 020104(R)] Published Tue Aug 25, 2015

]]>We show that the expression for the equilibrium thermodynamic entropy contains an integral over a surface in phase space, and in so doing, we confirm that negative temperature is a valid thermodynamic concept. This demonstration disproves the claims of several recent papers that the Gibbs entropy, w…

[Phys. Rev. E 92, 020103(R)] Published Fri Aug 21, 2015

]]>Dense suspensions display complex flow properties, intermediate between solid and liquid. When sheared, a suspension self-organizes and forms particle clusters that are likely to percolate, possibly leading to significant changes in the overall behavior. Some theoretical conjectures on percolation i…

[Phys. Rev. E 92, 020301(R)] Published Fri Aug 21, 2015

]]>We propose a dynamical mechanism leading to the fluidization by external mechanical fluctuations of soft-glassy amorphous material driven below the yield stress. The model is based on the combination of memory effect and nonlinearity, leading to an accumulation of tiny effects over a long term. We t…

[Phys. Rev. E 92, 020201(R)] Published Thu Aug 20, 2015

]]>Electron-scale surface waves are shown to be unstable in the transverse plane of a sheared flow in an initially unmagnetized collisionless plasma, not captured by (magneto)hydrodynamics. It is found that these unstable modes have a higher growth rate than the closely related electron-scale Kelvin-He…

[Phys. Rev. E 92, 021101(R)] Published Wed Aug 19, 2015

]]>When a bubble ruptures at a liquid surface the collapsing cavity produces a central jet that frequently breaks up into a series of droplets. Current experiment and theory predict that the production of jet drops will be limited by either viscous or gravitational effects. However, while there are a n…

[Phys. Rev. E 92, 021002(R)] Published Mon Aug 17, 2015

]]>We present an analytical treatment of the acoustics of liquid-filled wine glasses, or “glass harps.” The solution is generalized such that under certain assumptions it reduces to previous glass harp models, but also leads to a proposed musical instrument, the “inverted glass harp,” in which an empty…

[Phys. Rev. E 92, 021003(R)] Published Mon Aug 17, 2015

]]>We study the two-particle annihilation reaction $A+B\to \varnothing $ on interconnected scale-free networks, using different interconnecting strategies. We explore how the mixing of particles and the process evolution are influenced by the number of interconnecting links, by their functional properties, and by the …

[Phys. Rev. E 92, 020801(R)] Published Mon Aug 10, 2015

]]>In this Rapid Communication, we address a crucial point regarding the description of moderate to high Reynolds numbers aquatic swimmers. For decades, swimming animals have been classified in two different families of propulsive mechanisms based on the Reynolds number: the resistive swimmers, using l…

[Phys. Rev. E 92, 021001(R)] Published Mon Aug 10, 2015

]]>We numerically investigate quantum quenches of a nonintegrable hard-core Bose-Hubbard model to test the accuracy of the microcanonical ensemble in small isolated quantum systems. We show that, in a certain range of system size, the accuracy increases with the dimension of the Hilbert space $D$ as $1/D$.…

[Phys. Rev. E 92, 020102(R)] Published Wed Aug 05, 2015

]]>We consider the local load-sharing fiber bundle model in one to five dimensions. Depending on the breaking threshold distribution of the fibers, there is a transition where the fracture process becomes localized. In the localized phase, the model behaves as the invasion percolation model. The differ…

[Phys. Rev. E 92, 020401(R)] Published Wed Aug 05, 2015

]]>Temperature inversions occur in nature, e.g., in the solar corona and in interstellar molecular clouds: Somewhat counterintuitively, denser parts of the system are colder than dilute ones. We propose a simple and appealing way to *spontaneously* generate temperature inversions in systems with long-ran…

[Phys. Rev. E 92, 020101(R)] Published Mon Aug 03, 2015

]]>We report on finite-sized-induced transitions to synchrony in a population of phase oscillators coupled via a nonlinear mean field, which microscopically is equivalent to a hypernetwork organization of interactions. Using a self-consistent approach and direct numerical simulations, we argue that a t…

[Phys. Rev. E 92, 020901(R)] Published Mon Aug 03, 2015

]]>A composite metallic foil (Al/Mg/Al) has been exposed to intense sub-100 fs free electron laser (FEL) pulses and driven to ultrafast massive photoionization. The resulting nonequilibrium state of matter has been monitored through absorption spectroscopy across the ${L}_{2,3}$ edge of Mg as a function of th…

[Phys. Rev. E 92, 011101(R)] Published Fri Jul 31, 2015

]]>We examine experimentally the deformation of flexible, microscale helical ribbons with nanoscale thickness subject to viscous flow in a microfluidic channel. Two aspects of flexible microhelices are quantified: the overall shape of the helix and the viscous frictional properties. The frictional coef…

[Phys. Rev. E 92, 011004(R)] Published Thu Jul 30, 2015

]]>We introduce a simple lattice model in which percolation is constructed on top of critical percolation clusters, and find compelling numerical evidence that it can be repeated recursively any number $n$ of generations. In two dimensions, we determine the percolation thresholds up to $n=5$. The correspon…

[Phys. Rev. E 92, 010103(R)] Published Mon Jul 27, 2015

]]>Biopolymers are characterized by heterogeneous interactions, and usually perform their biological tasks forming contacts within domains of limited size. Combining polymer theory with a replica approach, we study the scaling properties of the probability of contact formation in random heteropolymers …

[Phys. Rev. E 92, 010702(R)] Published Mon Jul 27, 2015

]]>We consider practical synchronization on complex dynamical networks under linear feedback control designed by optimal control theory. The control goal is to minimize global synchronization error and control strength over a given finite time interval, and synchronization error at terminal time. By ut…

[Phys. Rev. E 92, 010903(R)] Published Mon Jul 27, 2015

]]>We report on chemoconvective pattern formation phenomena observed in a two-layer system of miscible fluids filling a vertical Hele-Shaw cell. We show both experimentally and theoretically that the concentration-dependent diffusion coupled with frontal acid-base neutralization can give rise to the fo…

[Phys. Rev. E 92, 011003(R)] Published Mon Jul 27, 2015

]]>We study the effect of freeze-thaw cycling on the packing fraction of equal spheres immersed in water. The water located between the grains experiences a dilatation during freezing and a contraction during melting. After several cycles, the packing fraction converges to a particular value ${\eta}_{\infty}=0.595$ i…

[Phys. Rev. E 92, 010202(R)] Published Thu Jul 23, 2015

]]>Using Monte Carlo computer simulations we explore the self-assembly and ordering behavior of a hybrid, soft magnetic system consisting of small magnetic nanospheres in a liquid-crystalline (LC) matrix. Inspired by recent experiments with colloidal rod matrices, we focus on conditions where the spher…

[Phys. Rev. E 92, 010501(R)] Published Wed Jul 22, 2015

]]>A method to approximately close the dynamic cavity equations for synchronous reversible dynamics on a locally treelike topology is presented. The method builds on (a) a graph expansion to eliminate loops from the normalizations of each step in the dynamics and (b) an assumption that a set of auxilar…

[Phys. Rev. E 92, 010102(R)] Published Tue Jul 21, 2015

]]>We revisit the light or heat-induced changes in topography of initially flat sheets of a solid that elongate or contract along patterned in-plane director fields. For radial or azimuthal directors, negative Gaussian curvature is generated—so-called “anticones.” We show that azimuthal material displa…

[Phys. Rev. E 92, 010401(R)] Published Tue Jul 21, 2015

]]>A water cylinder deposited on a heated channel levitates on its own generated vapor film owing to the Leidenfrost effect. This experimental setup permits the study of the one-dimensional propagation of surface waves in a free-to-move liquid system. We report the observation of gravity-capillary wave…

[Phys. Rev. E 92, 011002(R)] Published Mon Jul 20, 2015

]]>Methods for forecasting time series are a critical aspect of the understanding and control of complex networks. When the model of the network is unknown, nonparametric methods for prediction have been developed, based on concepts of attractor reconstruction pioneered by Takens and others. In this Ra…

[Phys. Rev. E 92, 010902(R)] Published Thu Jul 16, 2015

]]>The self-diffusion coefficient of a granular gas in the homogeneous cooling state is analyzed near the shearing instability. Using mode-coupling theory, it is shown that the coefficient diverges logarithmically as the instability is approached, due to the coupling of the diffusion process with the s…

[Phys. Rev. E 92, 010201(R)] Published Mon Jul 13, 2015

]]>Understanding the relaxation of a system towards equilibrium is a long-standing problem in statistical mechanics. Here we address the role of long-range interactions in this process by considering a class of two-dimensional flows where the interaction between fluid particles varies with the distance…

[Phys. Rev. E 92, 011001(R)] Published Fri Jul 10, 2015

]]>The description of activated relaxation of glassy systems in the multidimensional configurational space is a long-standing open problem. We develop a phenomenological description of the out-of-equilibrium dynamics of a model with a rough potential energy landscape and we analyze it both numerically …

[Phys. Rev. E 92, 010301(R)] Published Thu Jul 09, 2015

]]>Wave shape and velocity are important issues in reaction-diffusion systems, and are often the result of competition in media with heterogeneous conduction properties. Asymptotic wave front propagation at maximal conduction velocity has been previously reported in the context of anisotropic cardiac t…

[Phys. Rev. E 92, 010901(R)] Published Wed Jul 08, 2015

]]>A thin-interface phase-field model of electrochemical interfaces is developed based on Marcus kinetics for concentrated solutions, and used to simulate dendrite growth during electrodeposition of metals. The model is derived in the grand electrochemical potential to permit the interface to be widene…

[Phys. Rev. E 92, 011301(R)] Published Mon Jul 06, 2015

]]>We study the restricted solid on solid model for surface growth in spatial dimension $d=2$ by means of a *multisurface coding* technique that allows one to produce a large number of samples in the stationary regime in a reasonable computational time. Thanks to (i) a careful finite-size scaling analysis …

[Phys. Rev. E 92, 010101(R)] Published Thu Jul 02, 2015

]]>The accuracy of molecular signaling in biological cells and novel diagnostic devices is ultimately limited by the counting noise floor imposed by the thermal diffusion. Motivated by the fact that messenger RNA and vesicle-engulfed signaling molecules transiently bind to molecular motors and are acti…

[Phys. Rev. E 92, 010701(R)] Published Thu Jul 02, 2015

]]>We study the distribution of the mean radial displacement of charges of a two-dimensional (2D) one-component plasma in the thermodynamic limit $N\to \infty $ at finite temperature $\beta >0$. We compute explicitly the large deviation functions showing the emergence of a fourth-order phase transition as a consequen…

[Phys. Rev. E 91, 060105(R)] Published Fri Jun 26, 2015

]]>When DNA molecules are heated they denature. This occurs locally so that loops of molten single DNA strands form, connected by intact double-stranded DNA pieces. The properties of this “melting” transition have been intensively investigated. Recently there has been a surge of interest in this questi…

[Phys. Rev. E 91, 060702(R)] Published Fri Jun 26, 2015

]]>In many complex systems, states and interaction structure coevolve towards a dynamic equilibrium. For the adaptive contact process, we obtain approximate expressions for the degree distributions that characterize the interaction network in such active steady states. These distributions are shown to …

[Phys. Rev. E 91, 060801(R)] Published Fri Jun 26, 2015

]]>We investigate the effect of preferentially connecting oscillators with similar frequency to each other in networks of coupled phase oscillators (i.e., frequency assortativity). Using the network Kuramoto model as an example, we find that frequency assortativity can induce chaos in the macroscopic d…

[Phys. Rev. E 91, 060902(R)] Published Wed Jun 24, 2015

]]>The quantum evolution maps of closed chaotic quantum graphs are unitary and known to have universal spectral correlations matching predictions of random matrix theory. In chaotic graphs with absorption the quantum maps become nonunitary. We show that their spectral statistics exhibit universality at…

[Phys. Rev. E 91, 060901(R)] Published Mon Jun 22, 2015

]]>We introduce an enhanced sampling simulation technique based on continuous tempering, i.e., on continuously varying the temperature of the system under investigation. Our approach is mathematically straightforward, being based on an extended Hamiltonian formulation in which an auxiliary degree of fr…

[Phys. Rev. E 91, 061301(R)] Published Fri Jun 19, 2015

]]>Mechanical avalanches during compression of martensitic porous Ti-Ni have been characterized by high-frequency acoustic emission (AE). Two sequences of AE signals were found in the same sample. The first sequence is mainly generated by detwinning at the early stages of compression while fracture dom…

[Phys. Rev. E 91, 060401(R)] Published Wed Jun 17, 2015

]]>Out-of-equilibrium systems exhibit domain walls between different states. These walls, depending on the type of connected states, can display rich spatiotemporal dynamics. In this Rapid Communication, we investigate the asymmetrical counterpropagation of fronts in an in-plane-switching cell filled w…

[Phys. Rev. E 91, 060501(R)] Published Mon Jun 15, 2015

]]>In this work, we investigate the classical loop models doped with monomers and dimers on a square lattice, whose partition function can be expressed as a tensor network (TN). In the thermodynamic limit, we use the boundary matrix product state technique to contract the partition function TN, and det…

[Phys. Rev. E 91, 060104(R)] Published Thu Jun 11, 2015

]]>The well-known Knudsen paradox observed in pressure driven rarefied gas flows through long capillaries is quantitatively explored by decomposing the particle distribution function into its ballistic and collision parts. The classical channel, tube, and duct Poiseuille flows are considered. The solut…

[Phys. Rev. E 91, 061001(R)] Published Wed Jun 10, 2015

]]>According to the equipartition theorem, in a classical system at equilibrium, thermal energy is equally distributed among the degrees of freedom appearing as quadratic forms in the Hamiltonian. Asking the question what is the *spatial* distribution of the thermal energy, the authors find a general upper bound and show that the details depend on dimensionality, interactions, and disorder.

[Phys. Rev. E 91, 060103(R)] Published Tue Jun 09, 2015

]]>Near the critical point of fluids, critical opalescence results in light attenuation, or turbidity increase, that can be used to probe the universality of critical behavior. Turbidity measurements in SF6 under weightlessness conditions on board the International Space Station are performed to apprai…

[Phys. Rev. E 91, 060101(R)] Published Mon Jun 08, 2015

]]>We derive the joint distribution of the moments $\mathrm{Tr}{Q}^{\kappa}\phantom{\rule{4pt}{0ex}}(\kappa \ge 1)$ of the Wigner-Smith matrix for a chaotic cavity supporting a large number of scattering channels $n$. This distribution turns out to be asymptotically Gaussian, and we compute explicitly averages and covariances. The results are in a compact fo…

[Phys. Rev. E 91, 060102(R)] Published Mon Jun 08, 2015

]]>We find, in a two-dimensional air table granular system, that the reduced diffusion constant ${D}^{*}$ and excess entropy ${S}_{2}^{*}$ follow two distinct scaling laws: ${D}^{*}\sim {e}^{{S}_{2}^{*}}$ for dense liquids and ${D}^{*}\sim {e}^{3{S}_{2}^{*}}$ for dilute ones. The scaling for dense liquids is very similar to that for three-dimensional liquids propose…

[Phys. Rev. E 91, 060201(R)] Published Mon Jun 01, 2015

]]>Protein evolution is frequently explored using minimalist polymer models, however, little attention has been given to the problem of structural drift, or diffusion. Here, we study neutral evolution of small protein motifs using an off-lattice heteropolymer model in which individual monomers interact…

[Phys. Rev. E 91, 060701(R)] Published Mon Jun 01, 2015

]]>The effect of shape asymmetry of microswimmers on their adsorption capacity at confining channel walls is studied by a simple dumbbell model. For a shape polarity of a forward-swimming cone, like the stroke-averaged shape of a sperm, extremely long wall retention times are found, caused by a nonvani…

[Phys. Rev. E 91, 050302(R)] Published Thu May 28, 2015

]]>The authors develop a method for analysis of time series generated by a class of complex processes. They identify the mechanism that causes information divergence at each level in a hierarchy of such processes.

[Phys. Rev. E 91, 050106(R)] Published Wed May 27, 2015

]]>One of the major factors governing the mode of failure in disordered solids is the effective range $R$ over which the stress field is modified following a local rupture event. In a random fiber bundle model, considered as a prototype of disordered solids, we show that the failure mode is nucleation do…

[Phys. Rev. E 91, 050105(R)] Published Tue May 26, 2015

]]>We study the effect of confinement on the mean perimeter of the convex hull of a planar Brownian motion, defined as the minimum convex polygon enclosing the trajectory. We use a minimal model where an infinite reflecting wall confines the walk to one side. We show that the mean perimeter displays a …

[Phys. Rev. E 91, 050104(R)] Published Fri May 22, 2015

]]>An experimental and theoretical study of lyotropic chromonic liquid crystals (LCLCs) confined in cylinders with degenerate planar boundary conditions elucidates LCLC director configurations. When the Frank saddle-splay modulus is more than twice the twist modulus, the ground state adopts an inhomoge…

[Phys. Rev. E 91, 050501(R)] Published Fri May 22, 2015

]]>We consider the single-file motion of colloidal particles interacting via short-range repulsion and placed in a traveling wave potential that varies periodically in time and space. Under suitable driving conditions, a directed time-averaged flow of colloids is generated. We obtain analytic results f…

[Phys. Rev. E 91, 050103(R)] Published Wed May 20, 2015

]]>Learning in restricted Boltzmann machine is typically hard due to the computation of gradients of log-likelihood function. To describe the network state statistics of the restricted Boltzmann machine, we develop an advanced mean-field theory based on the Bethe approximation. Our theory provides an e…

[Phys. Rev. E 91, 050101(R)] Published Mon May 18, 2015

]]>We propose a quantum absorption refrigerator driven by photons. The model uses a four-level system as its working substance and couples simultaneously to hot, cold, and solar heat reservoirs. Explicit expressions for the cooling power ${\stackrel{\u0307}{Q}}_{c}$ and coefficient of performance (COP) ${\eta}_{\text{COP}}$ are derived, with t…

[Phys. Rev. E 91, 050102(R)] Published Mon May 18, 2015

]]>We present results of molecular dynamics simulations for two-dimensional repulsively interacting colloids driven by a one-dimensional asymmetric and commensurate ratchet potential, switching on and off stochastically. This drives a time-averaged directed current of colloids, exhibiting resonance wit…

[Phys. Rev. E 91, 050301(R)] Published Mon May 18, 2015

]]>The Biham-Middleton-Levine (BML) traffic model, a cellular automaton with eastbound and northbound cars moving by turns on a square lattice, has been an underpinning model in the study of collective behavior by cars, pedestrians, and even internet packages. Contrary to initial beliefs that the model…

[Phys. Rev. E 91, 050801(R)] Published Mon May 18, 2015

]]>Conducting beads in a viscous fluid are subjected to a high voltage. The authors observe the formation of a mobile treelike structure that evolves towards dynamic states with higher total current, or equivalently, higher rates of entropy production.

[Phys. Rev. E 91, 050902(R)] Published Mon May 18, 2015

]]>The long-time effect of weak rotation on an internal solitary wave is the decay into inertia-gravity waves and the eventual emergence of a coherent, steadily propagating, nonlinear wave packet. There is currently no entirely satisfactory explanation as to why these wave packets form. Here the initia…

[Phys. Rev. E 91, 051201(R)] Published Mon May 18, 2015

]]>Semiflexible polymers in channels with a rectangular cross section are studied as models for DNA molecules confined to nanochannels. The authors find that the average extension of the polymers is approximately independent of the rectangle aspect ratio, whereas the extension variance depends strongly on both dimensions of the rectangle.

[Phys. Rev. E 91, 050601(R)] Published Thu May 14, 2015

]]>Macroscopic systems with dissipation and time-modulated injection of energy, parametrically driven systems, can self-organize into localized states and/or patterns. We investigate a pulse that travels over a one-dimensional pattern in parametrically driven systems. Based on a minimal prototype model…

[Phys. Rev. E 91, 050901(R)] Published Fri May 08, 2015

]]>Channeling experiments were performed that demonstrate the transport of high-intensity $(>10{}^{18}W/{\mathrm{cm}}^{2})$, multikilojoule laser light through a millimeter-sized, inhomogeneous ($\sim 300\text{\u2212}\mu \mathrm{m}$ density scale length) laser-produced plasma up to overcritical density, which is an important step forward for the fas…

[Phys. Rev. E 91, 051101(R)] Published Mon May 04, 2015

]]>Many shear flows follow a route to turbulence that has striking similarities to bifurcation scenarios in low-dimensional dynamical systems. Among the bifurcations that appear, crisis bifurcations are important because they cause global transitions between open and closed attractors, or indicate dras…

[Phys. Rev. E 91, 041003(R)] Published Thu Apr 30, 2015

]]>We consider developed turbulence in the two-dimensional Gross-Pitaevskii model, which describes wide classes of phenomena from atomic and optical physics to condensed matter, fluids, and plasma. The well-known difficulty of the problem is that the hypothetical local spectra of both inverse and direc…

[Phys. Rev. E 91, 041201(R)] Published Wed Apr 29, 2015

]]>We consider the rotation of small neutrally buoyant axisymmetric particles in a viscous steady shear flow. When inertial effects are negligible the problem exhibits infinitely many periodic solutions, the “Jeffery orbits.” We compute how inertial effects lift their degeneracy by perturbatively solvi…

[Phys. Rev. E 91, 041002(R)] Published Tue Apr 28, 2015

]]>By means of a simple theoretical model and numerical simulations, we demonstrate the presence of persistent energy currents in a lattice of classical nonlinear oscillators with uniform temperature and chemical potential. In analogy with the well-known Josephson effect, the currents are proportional …

[Phys. Rev. E 91, 040102(R)] Published Mon Apr 27, 2015

]]>Granger causality has long been a prominent method for inferring causal interactions between stochastic variables for a broad range of complex physical systems. However, it has been recognized that a moving average (MA) component in the data presents a serious confound to Granger causal analysis, as…

[Phys. Rev. E 91, 040101(R)] Published Thu Apr 23, 2015

]]>For a globally coupled network of semiconductor lasers with delayed optical feedback, we demonstrate the existence of chimera states. The domains of coherence and incoherence that are typical for chimera states are found to exist for the amplitude, phase, and inversion of the coupled lasers. These c…

[Phys. Rev. E 91, 040901(R)] Published Wed Apr 22, 2015

]]>We demonstrate that waves in distinct layers of a neuronal network can become phase locked by common spatiotemporal noise. This phenomenon is studied for stationary bumps, traveling waves, and breathers. A weak noise expansion is used to derive an effective equation for the position of the wave in e…

[Phys. Rev. E 91, 040701(R)] Published Thu Apr 16, 2015

]]>We propose a self-consistent dynamo mechanism for the generation of large-scale magnetic fields in natural objects. Recent computational studies have described the formation of large-scale vortices in rotating turbulent convection. Here we demonstrate that for magnetic Reynolds numbers below the thr…

[Phys. Rev. E 91, 041001(R)] Published Thu Apr 16, 2015

]]>The progress of realizing colloidal structures mimicking natural forms of organization in condensed matter is inherently limited by the availability of suitable colloidal building blocks. To enable new forms of crystalline and quasicrystalline self-organization of colloids, we develop truncated pyra…

[Phys. Rev. E 91, 040501(R)] Published Tue Apr 07, 2015

]]>The understanding of the transport of suprathermal ions in the presence of turbulence is important for fusion plasmas in the burning regime that will characterize reactors, and for space plasmas to understand the physics of particle acceleration. Here, three-dimensional measurements of a supratherma…

[Phys. Rev. E 91, 041101(R)] Published Fri Apr 03, 2015

]]>A rich variety of responsive behavior occurs in complex structured fluids due to their lower symmetries. On the other hand, fluid disorder tends to increase the symmetry of liquid crystal mesophases. Here, we report direct evidence for the existence of a mesophase with ${C}_{S}$ symmetry. The observations …

[Phys. Rev. E 91, 030502(R)] Published Tue Mar 31, 2015

]]>The strong turbulence suppression, mainly for large-scale modes, of two-dimensional self-propelling rods, by increasing the long-range coupling strength $\Gamma $ of low-concentration passive particles, is numerically demonstrated. It is found that large-scale collective rod motion in forms of swirls or jet…

[Phys. Rev. E 91, 030302(R)] Published Mon Mar 30, 2015

]]>Surface nanobubbles are experimentally known to survive for days at hydrophobic surfaces immersed in gas-oversaturated water. This is different from bulk nanobubbles, which are pressed out by the Laplace pressure against *any* gas oversaturation and dissolve in submilliseconds, as derived by Epstein a…

[Phys. Rev. E 91, 031003(R)] Published Fri Mar 27, 2015

]]>A 263-nm Thomson-scattering beam was used to directly probe two-plasmon-decay (TPD) excited electron plasma waves (EPWs) driven by between two and five 351-nm beams on the OMEGA Laser System. The amplitude of these waves was nearly independent of the number of drive beams at constant overlapped inte…

[Phys. Rev. E 91, 031104(R)] Published Thu Mar 26, 2015

]]>This paper studies the steady-state current in a quantum chain driven by both boundary terms and an external force. The authors develop a perturbation expansion allowing for an exact treatment for large forces, and find large current rectification as well as resonance effects in the current at specific values of the force.

[Phys. Rev. E 91, 030103(R)] Published Tue Mar 24, 2015

]]>We present a method that reconstructs both the links and their relative coupling strength of bidirectional weighted networks. Our method requires only measurements of node dynamics as input. Using several examples, we demonstrate that our method can give accurate results for weighted random and weig…

[Phys. Rev. E 91, 030801(R)] Published Tue Mar 24, 2015

]]>We explore the crystallization of charged colloidal particles in a nonpolar solvent mixture. We simultaneously charge the particles and add counterions to the solution with aerosol-OT (AOT) reverse micelles. At low AOT concentrations, the charged particles crystallize into body-centered-cubic (bcc) …

[Phys. Rev. E 91, 030301(R)] Published Mon Mar 23, 2015

]]>Hierarchical organization is a cornerstone of complexity and multifractality constitutes its central quantifying concept. For model uniform cascades the corresponding singularity spectra are symmetric while those extracted from empirical data are often asymmetric. Using selected time series represen…

[Phys. Rev. E 91, 030902(R)] Published Fri Mar 20, 2015

]]>The authors study synchronization of oscillating micron-sized elliptical particles that are dispersed in water and trapped in separate focused laser beams. The experimental observations can be described by a phenomenological model for optical and hydrodynamic forces. This system of oscillating particles could serve as a model for studying hydrodynamic synchronization of biological cilia.

[Phys. Rev. E 91, 031002(R)] Published Fri Mar 20, 2015

]]>Scroll waves of reentrant activity and their interactions pose a serious threat to cardiac health. In experiments with the Belousov-Zhabotinsky reaction we demonstrate the interaction of scroll waves. We show that depending on their mutual orientation, two scroll rings can push each other away and r…

[Phys. Rev. E 91, 030901(R)] Published Wed Mar 18, 2015

]]>The isometric fluctuation relation (IFR) [P. I. Hurtado *et al.*, Proc. Natl. Acad. Sci. USA **108**, 7704 (2011)] relates the relative probability of current fluctuations of fixed magnitude in different spatial directions. We test its validity in an experiment on a tapered rod, rendered motile by vertic…

[Phys. Rev. E 91, 030102(R)] Published Fri Mar 13, 2015

]]>Three-dimensional wave propagation simulations and experiments show that the gain exponent, an often used metric to assess the likelihood of stimulated Brillouin scatter, is insufficient and must be augmented with another parameter, ${N}_{r}$, the ratio of the resonance length, ${L}_{\text{res}}$, to the laser speckle l…

[Phys. Rev. E 91, 031103(R)] Published Fri Mar 13, 2015

]]>Attempts to extend the capillary-wave theory of fluid interfacial fluctuations to microscopic wavelengths, by introducing an effective wave-vector $\left(q\right)$ -dependent surface tension ${\sigma}_{\mathrm{eff}}\left(q\right)$, have encountered difficulties. There is no consensus as to even the shape of ${\sigma}_{\mathrm{eff}}\left(q\right)$. By analyzing a simple densi…

[Phys. Rev. E 91, 030401(R)] Published Wed Mar 11, 2015

]]>It is demonstrated that a novel heating configuration applied to a large and cold magnetized plasma allows the study of avalanche phenomena under controlled conditions. Intermittent collapses of the plasma pressure profile, associated with unstable drift-Alfvén waves, exhibit a two-slope power-law s…

[Phys. Rev. E 91, 031102(R)] Published Wed Mar 11, 2015

]]>The conventional second-order path-integral Monte Carlo method is plagued with the sign problem in solving many-fermion systems. This is due to the large number of antisymmetric free-fermion propagators that are needed to extract the ground state wave function at large imaginary time. In this work w…

[Phys. Rev. E 91, 031301(R)] Published Wed Mar 11, 2015

]]>We study statistical properties of packings of monodisperse spheres in a flat box. After “gravitational” filling and appropriate agitation, a nearly regular (in plane) but frustrated (normal to the plane) triangular lattice forms, where beads at individual sites touch either the front or back wall. …

[Phys. Rev. E 91, 030201(R)] Published Tue Mar 10, 2015

]]>We observe that topological defects in nematic colloids are strongly influenced by the elasticity and onset of smectic layering across the nematic $\left(N\right)$ to smectic-$A\left(\mathrm{Sm}A\right)$ phase transition. When approaching the $\mathrm{Sm}A$ phase from above, the nematic hyperbolic hedgehog defect that accompanies a spherical c…

[Phys. Rev. E 91, 030501(R)] Published Tue Mar 10, 2015

]]>At high angles of attack, an aircraft wing stalls. This dreaded event is characterized by the development of a leading edge vortex on the upper surface of the wing, followed by its shedding which causes a drastic drop in the aerodynamic lift. At similar angles of attack, the leading edge vortex on a…

[Phys. Rev. E 91, 031001(R)] Published Tue Mar 10, 2015

]]>We propose a design adjustment to the high foot laser pulse [T. R. Dittrich *et al.*, Phys. Rev. Lett. **112**, 055002 (2014)] that is predicted to lower the fuel adiabat, increase compression and neutron production, but maintain similar ablation front growth. This is accomplished by lowering the laser p…

[Phys. Rev. E 91, 031101(R)] Published Mon Mar 09, 2015

]]>We study probability distribution of a steady state of a periodically driven system coupled to a thermal bath by using a quantum master equation in the weak-coupling limit. It is proved that, even when the external field is strong, the probability distribution is independent of the detailed nature o…

[Phys. Rev. E 91, 030101(R)] Published Tue Mar 03, 2015

]]>Here we characterize the low-noise regime of a stochastic model for a negative self-regulating binary gene. The model has two stochastic variables, the protein number and the state of the gene. Each state of the gene behaves as a protein source governed by a Poisson process. The coupling between the…

[Phys. Rev. E 91, 020701(R)] Published Thu Feb 26, 2015

]]>Flame particles are mathematical points comoving with a reacting isoscalar surface in a premixed flame. In this Rapid Communication, we investigate mean square pair separation of flame particles as a function of time from their positions tracked in two sets of direct numerical simulation solutions o…

[Phys. Rev. E 91, 021001(R)] Published Thu Feb 26, 2015

]]>Indirect-drive implosions with a high-density carbon (HDC) capsule were conducted on the National Ignition Facility (NIF) to test HDC properties as an ablator material for inertial confinement fusion. A series of five experiments were completed with $76\text{\u2212}\mu \mathrm{m}$-thick HDC capsules using a four-shock laser …

[Phys. Rev. E 91, 021101(R)] Published Wed Feb 25, 2015

]]>We demonstrate reservoir computing with a physical system using a single autonomous Boolean logic element with time-delay feedback. The system generates a chaotic transient with a window of consistency lasting between 30 and 300 ns, which we show is sufficient for reservoir computing. We then charac…

[Phys. Rev. E 91, 020801(R)] Published Mon Feb 23, 2015

]]>We study a seven-state Potts glass model in three dimensions with first-, second-, and third-nearest-neighbor interactions with a bimodal distribution of couplings by Monte Carlo simulations. Our results show the existence of a spin-glass transition at a finite temperature ${T}_{c}$, a discontinuous jump o…

[Phys. Rev. E 91, 020102(R)] Published Fri Feb 20, 2015

]]>We investigate the influence of large noise on the formation of localized patterns in the framework of the cubic-quintic complex Ginzburg-Landau equation. The interaction of localization and noise can lead to filling in or noisy localized structures for fixed noise strength. To focus on the interact…

[Phys. Rev. E 91, 020901(R)] Published Fri Feb 20, 2015

]]>A bulk metallic glass forming alloy is subjected to shear flow in its supercooled state by compression of a short rod to produce a flat disk. The resulting material exhibits enhanced crystallization kinetics during isothermal annealing as reflected in the decrease of the crystallization time relativ…

[Phys. Rev. E 91, 020301(R)] Published Wed Feb 18, 2015

]]>We show that the presence of a Coriolis force in a rotating linear lattice imposes a nonreciprocal propagation of the phononic heat carriers. Using this effect we propose the concept of Coriolis linear thermal circulator which can control the circulation of a heat current. A simple model of three co…

[Phys. Rev. E 91, 020101(R)] Published Fri Feb 13, 2015

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