We investigate the distribution of relative velocities between small heavy particles of different sizes in turbulence by analyzing a statistical model for bidisperse turbulent suspensions, containing particles with two different Stokes numbers. This number, $\text{St}$, is a measure of particle inertia which...

[Phys. Rev. E 96, 061102(R)] Published Thu Dec 14, 2017

]]>We consider an arbitrary quantum system coupled nonperturbatively to a large arbitrary and fully quantum environment. In the work by Ithier and Benaych-Georges [Phys. Rev. A **96**, 012108 (2017)] the typicality of the dynamics of such an embedded quantum system was established for several classes of ra...

[Phys. Rev. E 96, 060102(R)] Published Wed Dec 13, 2017

]]>We obtain several exact results for universal distributions involving the maximum of the ${\mathrm{Airy}}_{2}$ process minus a parabola and plus a Brownian motion, with applications to the one-dimensional Kardar-Parisi-Zhang (KPZ) stochastic growth universality class. This allows one to obtain (i) the universal lim...

[Phys. Rev. E 96, 060101(R)] Published Thu Dec 07, 2017

]]>The authors investigate collective behavior of repulsive Brownian particles. Simulations and analytical studies reveal that chemically active repulsive particles, when confined to a constant-volume domain, may undergo a liquid-to-crystal phase transition analogous to that found for positive ions in one-component plasmas. Experimental tests of the predictions appear to be feasible.

[Phys. Rev. E 96, 060601(R)] Published Fri Dec 01, 2017

]]>We report on an experimental observation of classical diffusion distinguishing between structural universality classes of disordered systems in one dimension. Samples of hyperuniform and short-range disorder were designed, characterized by the statistics of the placement of micrometer-thin parallel ...

[Phys. Rev. E 96, 061101(R)] Published Fri Dec 01, 2017

]]>Tracking experiments in dense biological tissues reveal a diversity of sources for local energy injection at the cell scale. The effect of cell motility has been largely studied, but much less is known about the effect of the observed volume fluctuations of individual cells. We consider a microscopi...

[Phys. Rev. E 96, 050601(R)] Published Wed Nov 22, 2017

]]>We report a transition from a disordered state to an ordered state in the flow of nearly monodisperse granular matter flowing in an inclined channel with planar slide walls and a bumpy base, using discrete element method simulations. For low particle-sidewall friction coefficients, the flowing parti...

[Phys. Rev. E 96, 050901(R)] Published Wed Nov 22, 2017

]]>Boltzmann machines are physics informed generative models with broad applications in machine learning. They model the probability distribution of an input data set with latent variables and generate new samples accordingly. Applying the Boltzmann machines back to physics, they are ideal recommender ...

[Phys. Rev. E 96, 051301(R)] Published Thu Nov 16, 2017

]]>This work focuses on quantitative representation of transport in systems with quenched disorder. Explicit mapping of the quenched trap model to continuous time random walk is presented. Linear temporal transformation, $t\to t/{\mathrm{\Lambda}}^{1/\alpha}$, for a transient process in the subdiffusive regime is sufficient for asy...

[Phys. Rev. E 96, 050103(R)] Published Mon Nov 13, 2017

]]>The fluctuation-dissipation relation, a central result in nonequilibrium statistical physics, relates equilibrium fluctuations in a system to its linear response to external forces. Here we provide a direct experimental verification of this relation for viscously coupled oscillators, as realized by ...

[Phys. Rev. E 96, 050102(R)] Published Fri Nov 10, 2017

]]>We investigate percolation, a probabilistic model for continuous phase transition, on square and weighted planar stochastic lattices. In its thermal counterpart, entropy is minimally low where order parameter (OP) is maximally high and vice versa. In addition, specific heat, OP, and susceptibility e...

[Phys. Rev. E 96, 050101(R)] Published Tue Nov 07, 2017

]]>We analyze the statistics of the shortest and fastest paths on the road network between randomly sampled end points. We find that, to a good approximation, the optimal paths can be described as directed polymers in a disordered medium, which belong to the Kardar-Parisi-Zhang universality class of in...

[Phys. Rev. E 96, 050301(R)] Published Wed Nov 01, 2017

]]>We study the evolution of the concentration field in a single eddy in the two-dimensional (2D) Cahn-Hilliard system to better understand scalar mixing processes in that system. This study extends investigations of the classic studies of flux expulsion in 2D magnetohydrodynamics and homogenization of...

[Phys. Rev. E 96, 041101(R)] Published Tue Oct 31, 2017

]]>Visual evaluation of the surface anchoring energies in a nematic liquid crystal (LC) cell is characterized by the direction of the convection roll pattern that appears in the low-frequency conduction regime. The convection roll pattern in a twisted nematic LC (TNLC) cell is oriented perpendicular to...

[Phys. Rev. E 96, 040701(R)] Published Mon Oct 30, 2017

]]>We study the transition between steady flows of noncohesive granular materials in quasi-two-dimensional bounded heaps by suddenly changing the feed rate. In both experiments and simulations, the primary feature of the transition is a wedge of flowing particles that propagates downstream over the ris...

[Phys. Rev. E 96, 040902(R)] Published Mon Oct 30, 2017

]]>The inapplicability of the DLVO theory to multilayered anionic bilayers is found in terms of the co-ion-valence dependence of the lamellar repeat distance. Most of the added salt is expelled from the interlamellar space to the bulk due to the Gibbs-Donnan effect on multiple bilayers with the bulk. T...

[Phys. Rev. E 96, 040601(R)] Published Thu Oct 19, 2017

]]>Tunneling between two classically disconnected regular regions can be strongly affected by the presence of a chaotic sea in between. This phenomenon, known as chaos-assisted tunneling, gives rise to large fluctuations of the tunneling rate. Here we study chaos-assisted tunneling in the presence of A...

[Phys. Rev. E 96, 040201(R)] Published Wed Oct 18, 2017

]]>Single-cell gene expression is inherently stochastic; its emergent behavior can be defined in terms of the chemical master equation describing the evolution of the mRNA and protein copy numbers as the latter tends to infinity. We establish two types of “macroscopic limits”: the Kurtz limit is consis...

[Phys. Rev. E 96, 040402(R)] Published Wed Oct 18, 2017

]]>Analogies between fluid flows and granular flows are useful because they pave the way for continuum treatments of granular media. However, in practice it is impossible to predict under what experimental conditions the dynamics of fluids and granulates are qualitatively similar. In the case of unstea...

[Phys. Rev. E 96, 040901(R)] Published Thu Oct 12, 2017

]]>The networks of veins and arteries on the chorionic plate of the human placenta are analyzed in terms of Voronoi cells derived from these networks. Two groups of placentas from the United States are studied: a population cohort with no prescreening, and a cohort from newborns with an elevated risk o...

[Phys. Rev. E 96, 040401(R)] Published Mon Oct 02, 2017

]]>Passive filters allowing the exchange of particles in a narrow band of energy are currently used in microrefrigerators and energy transducers. In this Rapid Communication, we analyze their thermal properties using linear irreversible thermodynamics and kinetic theory, and discuss a striking phenomen...

[Phys. Rev. E 96, 030103(R)] Published Tue Sep 26, 2017

]]>An intruder penetrating into a granular column experiences a depth-dependent friction force $F\left(z\right)$. Different regimes of $F\left(z\right)$ have been measured depending on the experimental design: a nearly linear dependence for shallow penetrations, total saturation at large depths, and an exponential increase when...

[Phys. Rev. E 96, 030901(R)] Published Mon Sep 25, 2017

]]>The loop extrusion theory assumes that protein factors, such as cohesin rings, act as molecular motors that extrude chromatin loops. However, recent single molecule experiments have shown that cohesin does not show motor activity. To predict the physical mechanism involved in loop extrusion, we here...

[Phys. Rev. E 96, 030402(R)] Published Fri Sep 22, 2017

]]>Transitions between multiple stable states of nonlinear systems are ubiquitous in physics, chemistry, and beyond. Two types of behaviors are usually seen as mutually exclusive: unpredictable noise-induced transitions and predictable bifurcations of the underlying vector field. Here, we report a diff...

[Phys. Rev. E 96, 030201(R)] Published Mon Sep 18, 2017

]]>We investigate the mechanical properties of amorphous polymers by means of coarse-grained simulations and nonaffine lattice dynamics theory. A small increase of polymer chain bending stiffness leads first to softening of the material, while hardening happens only upon further strengthening of the ba...

[Phys. Rev. E 96, 030501(R)] Published Wed Sep 13, 2017

]]>Synchrotron diffuse x-ray scattering data reveal a dramatic softening of the molecular tilt modulus ${K}_{\theta}$ of the model biomembrane composed of DMPC lipids as the temperature is lowered towards the main phase transition temperature at ${T}_{M}={24}^{\phantom{\rule{0.16em}{0ex}}\circ}\mathrm{C}$. Spontaneous tilt occurs below ${T}_{M}$, suggesting that tilt is a ...

[Phys. Rev. E 96, 030401(R)] Published Tue Sep 12, 2017

]]>We investigate fluctuations of output work for a class of Stirling heat engines with working fluid composed of interacting units and compare these fluctuations to an average work output. In particular, we focus on engine performance close to a critical point where Carnot's efficiency may be attained...

[Phys. Rev. E 96, 030102(R)] Published Wed Sep 06, 2017

]]>A comparison of the arrival-time statistics of New York City’s subway trains indicates that some train lines may be more efficiently run than others.

[Phys. Rev. E 96, 030101(R)] Published Tue Sep 05, 2017

]]>The Sagdeev-Zaslavski (SZ) equation for wave turbulence is analytically derived, both in terms of a generating function and of a multipoint probability density function (PDF), for weakly interacting waves with initial random phases. When the initial amplitudes are also random, a one-point PDF equati...

[Phys. Rev. E 96, 021101(R)] Published Wed Aug 30, 2017

]]>We study the role of hydrodynamic interactions in the collective behavior of collections of microscopic active particles suspended in a fluid. We introduce a calculational framework that allows us to separate the different contributions to their collective dynamics from hydrodynamic interactions on ...

[Phys. Rev. E 96, 020603(R)] Published Tue Aug 29, 2017

]]>Computational studies of supercooled liquids often focus on various analyses of their “underlying inherent states”—the glassy configurations at zero temperature obtained by an infinitely fast (instantaneous) quench from equilibrium supercooled states. Similar protocols are also regularly employed in...

[Phys. Rev. E 96, 020104(R)] Published Mon Aug 28, 2017

]]>We study the real-time and real-space dynamics of charge in the one-dimensional Hubbard model in the limit of high temperatures. To this end, we prepare pure initial states with sharply peaked density profiles and calculate the time evolution of these nonequilibrium states, by using numerical forwar...

[Phys. Rev. E 96, 020105(R)] Published Mon Aug 28, 2017

]]>We study the phase diagram of a class of models in which a generalized cluster interaction can be quenched by an Ising exchange interaction and external magnetic field. The various phases are studied through winding numbers. They may be ordinary phases with local order parameters or exotic ones, kno...

[Phys. Rev. E 96, 020106(R)] Published Mon Aug 28, 2017

]]>This paper presents the finite-time version of the thermodynamic uncertainty relation for nonequilibrium steady states, which sets a bound on the magnitude of current fluctuations. The authors use a methodology that is similar to the proof for the long-time limit, but with large-deviation theory applied to an ensemble of many copies.

[Phys. Rev. E 96, 020103(R)] Published Fri Aug 25, 2017

]]>In a recent molecular dynamics simulation work it has been shown that glasses composed of hard spheres crystallize via cooperative, stochastic particle displacements called avalanches [E. Sanz *et al.*, Proc. Natl. Acad. Sci. USA **111**, 75 (2014)]. In this Rapid Communication we investigate if such a d...

[Phys. Rev. E 96, 020602(R)] Published Wed Aug 23, 2017

]]>We describe the effect of *kinetic interactions* of adsorbed atoms in a mesoscale model of epitaxial growth without elasticity. Our goal is to understand how atomic correlations due to kinetics leave their signature in mechanisms governing the motion of crystal line defects (steps) at the nanoscale. W...

[Phys. Rev. E 96, 020802(R)] Published Tue Aug 22, 2017

]]>The early-time regime of the Kardar-Parisi-Zhang (KPZ) equation in $1+1$ dimension, starting from a Brownian initial condition with a drift $w$, is studied using the exact Fredholm determinant representation. For large drift we recover the exact results for the droplet initial condition, whereas a vanis...

[Phys. Rev. E 96, 020102(R)] Published Mon Aug 14, 2017

]]>We show that fore-aft asymmetry, a generic feature of living organisms and some active matter systems, can have a strong influence on the collective properties of even the simplest flocking models. Specifically, an arbitrarily weak asymmetry favoring front neighbors changes qualitatively the phase d...

[Phys. Rev. E 96, 020601(R)] Published Mon Aug 14, 2017

]]>Athermal disordered systems can exhibit a remarkable response to an applied oscillatory shear: After a relatively few shearing cycles, the system falls into a configuration that had already been visited in a previous cycle. After this point the system repeats its dynamics periodically despite underg...

[Phys. Rev. E 96, 020101(R)] Published Thu Aug 10, 2017

]]>Here, we show a direct connection between density-based segregation and granular rheology that can lead to insight into both problems. Our results exhibit a transition in the rate of segregation during simple shear that occurs at $I\sim 0.5$ and mimics a coincident regime change in flow rheology. We propo...

[Phys. Rev. E 96, 020901(R)] Published Thu Aug 10, 2017

]]>We consider capillary condensation transitions occurring in open slits of width $L$ and finite height $H$ immersed in a reservoir of vapor. In this case the pressure at which condensation occurs is closer to saturation compared to that occurring in an infinite slit ($H=\infty $) due to the presence of two menis...

[Phys. Rev. E 96, 020801(R)] Published Fri Aug 04, 2017

]]>Although interdependent systems have usually been associated with increased fragility, we show that strengthening the interdependence between dynamical processes on different networks can make them more likely to survive over long times. By coupling the dynamics of networks that in isolation exhibit...

[Phys. Rev. E 96, 020301(R)] Published Thu Aug 03, 2017

]]>We develop statistical mechanics for stochastic growth processes and apply it to Laplacian growth by using its remarkable connection with a random matrix theory. The Laplacian growth equation is obtained from the variation principle and describes adiabatic (quasistatic) thermodynamic processes in th...

[Phys. Rev. E 96, 010103(R)] Published Thu Jul 20, 2017

]]>Machine learning is one of the most popular fields in computer science and has a vast number of applications. In this work we will propose a method that will use a neural network to locally identify crystal structures in a mixed phase Yukawa system consisting of fcc, hcp, and bcc clusters and disord...

[Phys. Rev. E 96, 011301(R)] Published Wed Jul 19, 2017

]]>Cells exhibit qualitatively different behaviors on substrates with different rigidities. The fact that cells are more polarized on the stiffer substrate motivates us to construct a two-dimensional cell with the distribution of focal adhesions dependent on substrate rigidities. This distribution affe...

[Phys. Rev. E 96, 010402(R)] Published Mon Jul 17, 2017

]]>The linear stability of viscous Keplerian flow around a gravitating center is studied using the rheological granular fluid model. The linear rheological instability triggered by the interplay of the shear rheology and Keplerian differential rotation of incompressible dense granular fluids is found. ...

[Phys. Rev. E 96, 010901(R)] Published Mon Jul 17, 2017

]]>Spontaneous formation of spinning pairs of particles, or torsions, is studied in a single-layer complex plasma crystal by reducing the discharge power at constant neutral gas pressure. At higher gas pressures, torsions spontaneously form below a certain power threshold. Further reduction of the disc...

[Phys. Rev. E 96, 011201(R)] Published Wed Jul 12, 2017

]]>Although time-dependent random media with short-range correlations lead to (possibly biased) normal tracer diffusion, anomalous fluctuations occur away from the most probable direction. This was pointed out recently in one-dimensional (1D) lattice random walks, where statistics related to the 1D Kar...

[Phys. Rev. E 96, 010102(R)] Published Mon Jul 10, 2017

]]>Viewing the ways a living cell can organize its metabolism as the phase space of a physical system, regulation can be seen as the ability to reduce the entropy of that space by selecting specific cellular configurations that are, in some sense, optimal. Here we quantify the amount of regulation requ...

[Phys. Rev. E 96, 010401(R)] Published Mon Jul 10, 2017

]]>We present a method of deriving a boundary condition for diffusion at a thin membrane from experimental data. Based on experimental results obtained for normal diffusion of ethanol in water, we show that the derived boundary condition at a membrane contains a term with a Riemann-Liouville fractional...

[Phys. Rev. E 96, 010101(R)] Published Wed Jul 05, 2017

]]>We study edge fluctuations of a flat colloidal membrane comprised of a monolayer of aligned filamentous viruses. Experiments reveal that a peak in the spectrum of the in-plane edge fluctuations arises for sufficiently strong virus chirality. Accounting for internal liquid crystalline degrees of free...

[Phys. Rev. E 95, 060701(R)] Published Fri Jun 30, 2017

]]>Analysis of the Vlasov-Maxwell equations from the perspective of turbulence cascade clarifies the role of electromagnetic work, and reveals the importance of the pressure-strain relation in generating internal energy. Particle-in-cell simulation demonstrates the relative importance of the several en...

[Phys. Rev. E 95, 061201(R)] Published Thu Jun 29, 2017

]]>Magnetic and dielectric solids are well-represented by the Ising model with dipolar interactions (IM+DI). The latter are long-ranged, fluctuating in sign, and anisotropic. Equilibrium studies have revealed novel consequences of these complicated interactions, but their effect on nonequilibrium behav...

[Phys. Rev. E 95, 060103(R)] Published Wed Jun 28, 2017

]]>We present a derivation of generalized Poisson-Boltzmann equations starting from classical theories of binary fluid mixtures, employing an approach based on the Legendre transform as recently applied to the case of local descriptions of the fluid free energy. Under specific symmetry assumptions, and...

[Phys. Rev. E 95, 060602(R)] Published Wed Jun 28, 2017

]]>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

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