We consider the mean first passage time (MFPT) of a two-dimensional diffusing particle to a small trap with a distribution of absorbing and reflecting sections. High-order asymptotic formulas for the MFPT and the fundamental eigenvalue of the Laplacian are derived which extend previously obtained re...

[Phys. Rev. E 91, 032111] Published Fri Mar 06, 2015

]]> We study Anderson localization of the classical lattice waves in a chain with mass impurities distributed randomly through a power-law relation s^{−(1+α)} with s as the distance between two successive impurities and α>0. This model of disorder is long-range correlated and is inspired by the peculiar...

[Phys. Rev. E 91, 032112] Published Fri Mar 06, 2015

]]>The deterministic dynamics of randomly connected neural networks are studied, where a state of binary neurons evolves according to a discrete-time synchronous update rule. We give theoretical support that the overlap of systems' states between the current and a previous time develops in time accordi...

[Phys. Rev. E 91, 032802] Published Fri Mar 06, 2015

]]>Many networks can be usefully decomposed into a dense core plus an outlying, loosely connected periphery. Here we propose an algorithm for performing such a decomposition on empirical network data using methods of statistical inference. Our method fits a generative model of core-periphery structure ...

[Phys. Rev. E 91, 032803] Published Fri Mar 06, 2015

]]>We prove the existence of an asymptotic phase-transition threshold on community detectability for the spectral modularity method [M. E. J. Newman, Phys. Rev. E 74, 036104 (2006)PLEEE810.1103/PhysRevE.74.036104 and Proc. Natl. Acad. Sci. (USA) 103, 8577 (2006)PNASA610.1073/pnas.0601602103] under a st...

[Phys. Rev. E 91, 032804] Published Fri Mar 06, 2015

]]>In the study of complex systems from observed multivariate time series, insight into the evolution of one system may be under investigation, which can be explained by the information storage of the system and the information transfer from other interacting systems. We present a framework for the mod...

[Phys. Rev. E 91, 032904] Published Fri Mar 06, 2015

]]>A new phase-field model is developed for studying partial wetting. The introduction of a third phase representing a solid wall allows for the derivation of a new surface tension force that accounts for energy changes at the contact line. In contrast to other multi-phase-field formulations, the prese...

[Phys. Rev. E 91, 033005] Published Fri Mar 06, 2015

]]>Electron screening of ions is among the most fundamental properties of plasmas, determining the effective ionic interactions that impact all properties of a plasma. With the development of new experimental facilities that probe high-energy-density physics regimes ranging from warm dense matter to ho...

[Phys. Rev. E 91, 033104] Published Fri Mar 06, 2015

]]>The complex pattern and propagation characteristics of nonlinear periodic ion-acoustic waves, namely, ion-acoustic cnoidal waves, in a dense relativistic degenerate magnetoplasma consisting of relativistic degenerate electrons and nondegenerate cold ions are investigated. By means of the reductive p...

[Phys. Rev. E 91, 033105] Published Fri Mar 06, 2015

]]>A lattice Boltzmann (LB) model for the convection-diffusion equation (CDE) with divergence-free velocity field is proposed, and the Chapman-Enskog analysis shows that the CDE can be recovered correctly. In the present model, the convection term is treated as a source term in the lattice Boltzmann eq...

[Phys. Rev. E 91, 033302] Published Fri Mar 06, 2015

]]>This paper is devoted to the crumpling of thin matter. The Edwards-like statistical mechanics of crumpling networks in a crushed self-avoiding sheet with finite bending rigidity is developed. The statistical distribution of crease lengths is derived. The relationship between sheet packing density an...

[Phys. Rev. E 91, 032109] Published Thu Mar 05, 2015

]]>Evolutionary social dilemma games are extended by an additional matching-pennies game that modifies the collected payoffs. In a spatial version players are distributed on a square lattice and interact with their neighbors. First, we show that the matching-pennies game can be considered as the micros...

[Phys. Rev. E 91, 032110] Published Thu Mar 05, 2015

]]>We present a numerical method for simulations of spinodal decomposition of liquid-vapor systems. The results are in excellent agreement with theoretical predictions for all expected time regimes from the initial growth of “homophase fluctuations” up to the inertial hydrodynamics regime. The numerica...

[Phys. Rev. E 91, 032303] Published Thu Mar 05, 2015

]]> We study in experiment and with computer simulation the free energy and the kinetics of vacancy and interstitial defects in two-dimensional dipolar crystals. The defects appear in different local topologies, which we characterize by their point group symmetry; C_{n} is the n-fold cyclic group and D_{n} is...

[Phys. Rev. E 91, 032304] Published Thu Mar 05, 2015

]]>We provide exact expressions for the electrostatic energy of uniformly charged prolate and oblate spheroidal shells. We find that uniformly charged prolate spheroids of eccentricity greater than 0.9 have lower Coulomb energy than a sphere of the same area. For the volume-constrained case, we find th...

[Phys. Rev. E 91, 032305] Published Thu Mar 05, 2015

]]> This study considers a reaction-diffusion medium that supports a rotating scroll wave with stationary filament and diffusivity matrix D. The filament is a geodesic curve in three-space. The metric tensor g associated with that geodesic is obtained in terms of D, resulting in g=(detD) D^{−1} . Here detD...

[Phys. Rev. E 91, 032903] Published Thu Mar 05, 2015

]]>Linearly polarized solitary waves, arising from the interaction of an intense laser pulse with a plasma, are investigated. Localized structures, in the form of exact numerical nonlinear solutions of the one-dimensional Maxwell-fluid model for a cold plasma with fixed ions, are presented. Unlike stat...

[Phys. Rev. E 91, 033102] Published Thu Mar 05, 2015

]]>Giant cross-magnetic-field steps can occur as a result of positron-electron collisions. Within a constant magnetic field (e.g., 1 T), a collision between a positron and an electron can result in a correlated drift across the magnetic field for a continuous range of impact parameters. Within this ran...

[Phys. Rev. E 91, 033103] Published Thu Mar 05, 2015

]]>Via the Nth Darboux transformation, a chain of nonsingular localized-wave solutions is derived for a nonlocal nonlinear Schrödinger equation with the self-induced parity-time (PT) -symmetric potential. It is found that the Nth iterated solution in general exhibits a variety of elastic interactions a...

[Phys. Rev. E 91, 033202] Published Thu Mar 05, 2015

]]>We introduce a class of maximum-entropy states that naturally includes within it all of the major continuous-time stochastic processes that have been applied to animal movement, including Brownian motion, Ornstein-Uhlenbeck motion, integrated Ornstein-Uhlenbeck motion, a recently discovered hybrid o...

[Phys. Rev. E 91, 032107] Published Wed Mar 04, 2015

]]>A grid comb model is a generalization of the well known comb model, and it consists of N backbones. For N=1 the system reduces to the comb model where subdiffusion takes place with the transport exponent 1/2. We present an exact analytical evaluation of the transport exponent of anomalous diffusion ...

[Phys. Rev. E 91, 032108] Published Wed Mar 04, 2015

]]>The Burton-Cabrera-Frank (BCF) model for the flow of line defects (steps) on crystal surfaces has offered useful insights into nanostructure evolution. This model has rested on phenomenological grounds. Our goal is to show via scaling arguments the emergence of the BCF theory for noninteracting step...

[Phys. Rev. E 91, 032403] Published Wed Mar 04, 2015

]]>Recently, there has been growing interest in the electrical properties of bacteriorhodopsin (bR), a protein belonging to the transmembrane protein family. Several experiments pointed out the role of green light in enhancing the current flow in nanolayers of bR, thus confirming potential applications...

[Phys. Rev. E 91, 032702] Published Wed Mar 04, 2015

]]>We considered the rate at which a diffusing particle encounters a target in a three-dimensional lattice of compartments with semipermeable walls. This work expands a previous theory [Li et al., Phys. Rev. Lett. 113, 028303 (2014)10.1103/PhysRevLett.113.028303] for the encounter rate in the dilute li...

[Phys. Rev. E 91, 032801] Published Wed Mar 04, 2015

]]>The study of soliton interactions is of significance for improving pulse qualities in nonlinear optics. In this paper, interaction between two solitons, which is governed by the Hirota equation, is considered. Via use of the Hirota method, an analytic soliton solution is obtained. Then a two-period ...

[Phys. Rev. E 91, 033201] Published Wed Mar 04, 2015

]]>In this paper, a modified momentum exchange method for fluid-particle interactions is proposed based on the finite-volume lattice Boltzmann method. The idea of the improvement is to remove the restriction that the boundary points must be set as the midpoints of the grid lines or the intersection of ...

[Phys. Rev. E 91, 033301] Published Wed Mar 04, 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] Published Tue Mar 03, 2015

]]>Nonstationary disordered materials and media, those for which the probability distribution function of any property varies spatially when shifted in space, are abundant and encountered in astrophysics, oceanography, air pollution patterns, large-scale porous media, biological tissues and organs, and...

[Phys. Rev. E 91, 032401] Published Tue Mar 03, 2015

]]>The surface forces arising in wetting films of nonpolar liquids or in thin air interlayers between an electrolyte and a nonpolar medium in the case of discrete charging of the dielectric-electrolyte interface are considered. The contributions of polarization effects to the distribution of the electr...

[Phys. Rev. E 91, 032402] Published Tue Mar 03, 2015

]]>We propose a methodology to analyze synchronization in an ensemble of diffusively coupled multistable systems. First, we study how two bidirectionally coupled multistable oscillators synchronize and demonstrate the high complexity of the basins of attraction of coexisting synchronous states. Then, w...

[Phys. Rev. E 91, 032902] Published Tue Mar 03, 2015

]]>We investigate through numerical simulation the nonstationary flow of a Newtonian fluid through a two-dimensional channel filled with an array of circular obstacles of distinct sizes. The disks may rotate around their respective centers, modeling a nonstationary, inhomogeneous porous medium. Obstacl...

[Phys. Rev. E 91, 033002] Published Tue Mar 03, 2015

]]>The stability of the circular Couette flow of a dielectric fluid is analyzed by a linear perturbation theory. The fluid is confined between two concentric cylindrical electrodes of infinite length with only the inner one rotating. A temperature difference and an alternating electric tension are appl...

[Phys. Rev. E 91, 033003] Published Tue Mar 03, 2015

]]>Gas slippage occurs when the mean free path of the gas molecules is in the order of the characteristic pore size of a porous medium. This phenomenon leads to Klinkenberg's effect where the measured permeability of a gas (apparent permeability) is higher than that of the liquid (intrinsic permeabilit...

[Phys. Rev. E 91, 033004] Published Tue Mar 03, 2015

]]>We consider the static properties of periodic structures in weak random disorder. We apply a functional renormalization group approach (FRG) and a Gaussian variational method (GVM) to study their displacement correlations. We focus in particular on the effects of temperature and we compute explicitl...

[Phys. Rev. E 91, 032101] Published Mon Mar 02, 2015

]]> Two universality classes for thermal transport in one-dimensional oscillator systems are proposed. In class A the asymptotic behavior of the frequency dependent thermal conductivity is κ(ω)∼ω^{−1/2}, whereas the bulk viscosity is finite. In class B the asymptotic behavior of the thermal conductivity is...

[Phys. Rev. E 91, 032102] Published Mon Mar 02, 2015

]]> We present a study of the fiber bundle model using equal load-sharing dynamics where the breaking thresholds of the fibers are drawn randomly from a power-law distribution of the form p(b)∼b^{−1} in the range 10^{−β} to 10^{β}. Tuning the value of β continuously over a wide range, the critical behavior of th...

[Phys. Rev. E 91, 032103] Published Mon Mar 02, 2015

]]>In this paper we address the problem of computing state-dependent feedback controls for path integral control problems. To this end we generalize the path integral control formula and utilize this to construct parametrized state-dependent feedback controllers. In addition, we show a relation betwee...

[Phys. Rev. E 91, 032104] Published Mon Mar 02, 2015

]]>We study the critical Casimir force for a film geometry in the Ising universality class. We employ a homogeneous adsorption preference on one of the confining surfaces, while the opposing surface exhibits quenched random disorder, leading to a random local adsorption preference. Disorder is characte...

[Phys. Rev. E 91, 032105] Published Mon Mar 02, 2015

]]>We study the survival probability and the first-passage time distribution for a Brownian motion in a planar wedge with infinite absorbing edges. We generalize existing results obtained for wedge angles of the form π/n with n a positive integer to arbitrary angles, which in particular cover the case ...

[Phys. Rev. E 91, 032106] Published Mon Mar 02, 2015

]]>This article presents a new force model for performing quantitative simulations of dense granular materials. Interactions between multiple contacts (MC) on the same grain are explicitly taken into account. Our readily applicable MC-DEM method retains all the advantages of discrete-element method sim...

[Phys. Rev. E 91, 032201] Published Mon Mar 02, 2015

]]>In this paper we demonstrate the presence of anisotropic stress correlations in the simulated two-dimensional liquids. Whereas the temporal correlation of macroscopic shear stress is known to contribute to viscosity via the Green-Kubo formula, the general question regarding angular dependence of the...

[Phys. Rev. E 91, 032301] Published Mon Mar 02, 2015

]]>We model the packing structure of a marginally jammed bulk ensemble of polydisperse spheres. To this end we expand on the granocentric model [Clusel et al., Nature (London) 460, 611 (2009)NATUAS10.1038/nature08158], explicitly taking into account rattlers. This leads to a relationship between the ch...

[Phys. Rev. E 91, 032302] Published Mon Mar 02, 2015

]]>The KvAP potassium channel is representative of a family of voltage-gated ion channels where the membrane potential is sensed by a transmembrane helix containing several positively charged arginines. Previous work by Wang and Zocchi [A. Wang and G. Zocchi, PLoS ONE 6, e18598 (2011)10.1371/journal.po...

[Phys. Rev. E 91, 032701] Published Mon Mar 02, 2015

]]>We present a minimal one-dimensional deterministic continuous dynamical system that exhibits chaotic behavior and complex transport properties. Our model is an overdamped rocking ratchet with finite dissipation, that is periodically kicked with a δ function driving force, without finite inertia term...

[Phys. Rev. E 91, 032901] Published Mon Mar 02, 2015

]]>Capillary forces determine the shape of a liquid interface. Although often not considered, elastic solids with a free surface are also subjected to surface forces and these become important for materials of low Young's modulus. Here we consider two equivalent problems where a capillary free surface ...

[Phys. Rev. E 91, 033001] Published Mon Mar 02, 2015

]]> We report measurements and simulations of the time-evolving rms velocity distribution in an ultracold neutral plasma. A strongly coupled ultracold neutral Ca^{+} plasma is generated by photoionizing laser-cooled atoms close to threshold. A fraction of these ions is then promoted to the second ionizatio...

[Phys. Rev. E 91, 033101] Published Mon Mar 02, 2015

]]>We study the Brownian motion of a particle bound by a harmonic potential and immersed in a fluid with a uniform shear flow. We describe this problem first in terms of a linear Fokker-Planck equation which is solved to obtain the probability distribution function for finding the particle in a volume ...

[Phys. Rev. E 91, 022139] Published Fri Feb 27, 2015

]]>We introduce the leaf-excluded percolation model, which corresponds to independent bond percolation conditioned on the absence of leaves (vertices of degree one). We study the leaf-excluded model on the square and simple-cubic lattices via Monte Carlo simulation, using a worm-like algorithm. By stud...

[Phys. Rev. E 91, 022140] Published Fri Feb 27, 2015

]]>Liquid crystalline polymer stabilized blue phases (PSBPs) are candidate materials for next generation electro-optic switching devices because they form a self-organized three-dimensional periodic structure and exhibit a fast response time of submillisecond order. Considering the crystallographic str...

[Phys. Rev. E 91, 022503] Published Fri Feb 27, 2015

]]>We use a bath of chaotic surface waves in water to mechanically and macroscopically mimic the thermal behavior of a short articulated chain with only nearest-neighbor interactions. The chaotic waves provide isotropic and random agitation to which a temperature can be ascribed, allowing the chain to ...

[Phys. Rev. E 91, 022603] Published Fri Feb 27, 2015

]]>The authors study the influence of correlations and asymmetry of dichotomous noise on the output of a simple integrate-and-fire neuron model. They derive analytical expressions for the statistics and discuss how their results for a single neuron model might be applied to a study of up-down states in a population of neurons.

[Phys. Rev. E 91, 022718] Published Fri Feb 27, 2015

]]>An analytical approach is proposed for the investigation of the conductivity properties of DNA. The charge mobility of DNA is studied based on an extended Peyrard-Bishop-Holstein model when the charge carrier is also subjected to an external electrical field. We have obtained the values of some of t...

[Phys. Rev. E 91, 022719] Published Fri Feb 27, 2015

]]>We study a generic model for the polarization and motility of self-propelled soft objects, biological cells, or biomimetic systems, interacting with a viscous substrate. The active forces generated by the cell on the substrate are modeled by means of oscillating force multipoles at the cell-substrat...

[Phys. Rev. E 91, 022720] Published Fri Feb 27, 2015

]]>Information processing in living cells frequently involves an exchange of peripheral membrane proteins between the cytosol and organelle membranes. The typical time scale τ of these association-dissociation cycles is commonly quantified in vivo via fluorescence recovery after photobleaching (FRAP). ...

[Phys. Rev. E 91, 022721] Published Fri Feb 27, 2015

]]>Networks of Kuramoto oscillators with a positive correlation between the oscillators frequencies and the degree of their corresponding vertices exhibit so-called explosive synchronization behavior, which is now under intensive investigation. Here we study and discuss explosive synchronization in a s...

[Phys. Rev. E 91, 022818] Published Fri Feb 27, 2015

]]> We consider a modified Noguchi electrical transmission line and examine the effects of a linear capacitance C_{s} on the wave characteristics while considering the semidiscrete approximation. It appears that wave modulations in the network are governed by a dispersive nonlinear Schrödinger equation who...

[Phys. Rev. E 91, 022925] Published Fri Feb 27, 2015

]]>Long-range correlated processes are ubiquitous, ranging from climate variables to financial time series. One paradigmatic example for such processes is fractional Brownian motion (fBm). In this work, we highlight the potentials and conceptual as well as practical limitations when applying the recent...

[Phys. Rev. E 91, 022926] Published Fri Feb 27, 2015

]]>Recently Andrezejak et al. combined the randomness and nonlinear independence test with iterative amplitude adjusted Fourier transform (iAAFT) surrogates to distinguish between the dynamics of seizure-free intracranial electroencephalographic (EEG) signals recorded from epileptogenic (focal) and non...

[Phys. Rev. E 91, 022927] Published Fri Feb 27, 2015

]]>We consider pulse-coupled leaky integrate-and-fire neural networks with randomly distributed synaptic couplings. This random dilution induces fluctuations in the evolution of the macroscopic variables and deterministic chaos at the microscopic level. Our main aim is to mimic the effect of the diluti...

[Phys. Rev. E 91, 022928] Published Fri Feb 27, 2015

]]>The locomotion of swimming microorganisms often relies on synchronized motions; examples include the bundling of flagella and metachronal coordination of cilia. It is now generally accepted that such behavior can result from hydrodynamic interactions alone. In this paper we consider the interactions...

[Phys. Rev. E 91, 023018] Published Fri Feb 27, 2015

]]>This paper presents a new method for solving analytically the axisymmetric swirling flow generated in a finite annular channel from a rotating end wall, with no-slip boundary conditions along stationary side walls and a slip condition along the free surface opposite the rotating floor. In this case,...

[Phys. Rev. E 91, 023019] Published Fri Feb 27, 2015

]]>We report the development of interfacial ferrohydrodynamic instabilities when an initially circular bubble of a nonmagnetic inviscid fluid is surrounded by a viscous ferrofluid in the confined geometry of a Hele-Shaw cell. The fluid-fluid interface becomes unstable due to the action of magnetic forc...

[Phys. Rev. E 91, 023020] Published Fri Feb 27, 2015

]]>Based on an experiment and simulations, we report that an energy cascade in surface capillary waves can be bidirectional, that is, can simultaneously flow towards large and small wavelength scales from the pumping scales. The bidirectional energy cascade provides an effective global coupling mechani...

[Phys. Rev. E 91, 023021] Published Fri Feb 27, 2015

]]>[Phys. Rev. E 91, 029905] Published Fri Feb 27, 2015

]]>[Phys. Rev. E 91, 029906] Published Fri Feb 27, 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] 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] Published Thu Feb 26, 2015

]]> Fluid parts of the phase diagram of ^{3}He-^{4}He mixtures are obtained from a mean-field analysis of a suitable lattice gas model for binary liquid mixtures. The proposed model takes into account the continuous rotational symmetry O(2) of the superfluid degrees of freedom associated with ^{4}He and includes...

[Phys. Rev. E 91, 022138] Published Thu Feb 26, 2015

]]> We numerically simulate mechanically stable packings of soft-core, frictionless, bidisperse disks in two dimensions, above the jamming packing fraction ϕ_{J}. For configurations with a fixed isotropic global stress tensor, we compute the averages, variances, and correlations of conserved quantities (st...

[Phys. Rev. E 91, 022207] Published Thu Feb 26, 2015

]]>The liquid permeability of dense random packings of cubic colloids with rounded corners is studied for solid hematite cubes and hollow microporous silica cubes. The permeabilities of these two types of packings are similar, confirming that the micropores in the silica shell of the hollow cubes do no...

[Phys. Rev. E 91, 022311] Published Thu Feb 26, 2015

]]>Despite its simple chemical structure, water remains one of the most puzzling liquids with many anomalies at low temperatures. Combining neutron scattering and dielectric relaxation spectroscopy, we show that quantum fluctuations are not negligible in deeply supercooled water. Our dielectric measure...

[Phys. Rev. E 91, 022312] Published Thu Feb 26, 2015

]]>We report a Brownian dynamics simulation study of a two-dimensional system of repulsive colloidal particles in a channel geometry with a sinusoidal substrate potential under influence of a constant driving. The effect of this driving on the structure, mobility, and diffusion is discussed as well as ...

[Phys. Rev. E 91, 022313] Published Thu Feb 26, 2015

]]>Chimera states have been recently found in a variety of different coupling schemes and geometries. In most cases, the underlying coupling structure is considered to be static, while many realistic systems display significant temporal changes in the pattern of connectivity. In this work we investigat...

[Phys. Rev. E 91, 022817] Published Thu Feb 26, 2015

]]>We study a system of mismatched oscillators on a bipartite topology with time-delay coupling, and analyze the synchronized states. For a range of parameters, when all oscillators lock to a common frequency, we find solutions such that systems within a partition are in complete synchrony, while there...

[Phys. Rev. E 91, 022922] Published Thu Feb 26, 2015

]]>The coarsening of stripe patterns when the system is evolved from random initial states is studied by varying the quench depth ε, which is a measure of distance from the transition point of the stripe phase. The dynamics of the growth of stripe order, which is characterized by two length scales, de...

[Phys. Rev. E 91, 022923] Published Thu Feb 26, 2015

]]>We investigate the formation of localized structures with varying widths in one- and two-dimensional systems. The mechanism of stabilization is attributed to strongly nonlocal coupling mediated by a Lorentzian type of kernel. We show that, in addition to stable dips found recently [see, e.g. Fernand...

[Phys. Rev. E 91, 022924] Published Thu Feb 26, 2015

]]>[Phys. Rev. E 91, 029904] 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-μm-thick HDC capsules using a four-shock laser ...

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

]]>We present a unified perspective on nonequilibrium heat engines by generalizing nonlinear irreversible thermodynamics. For tight-coupling heat engines, a generic constitutive relation for nonlinear response accurate up to the quadratic order is derived from the stalling condition and the symmetry ar...

[Phys. Rev. E 91, 022136] Published Wed Feb 25, 2015

]]>Schrödinger suggested that thermodynamical functions cannot be based on the gratuitous allegation that quantum-mechanical levels (typically the orthogonal eigenstates of the Hamiltonian operator) are the only allowed states for a quantum system [E. Schrödinger, Statistical Thermodynamics (Courier Do...

[Phys. Rev. E 91, 022137] Published Wed Feb 25, 2015

]]>Myosin-V is a highly processive dimeric protein that walks with 36-nm steps along actin tracks, powered by coordinated adenosine triphosphate (ATP) hydrolysis reactions in the two myosin heads. No previous theoretical models of the myosin-V walk reproduce all the observed trends of velocity and run ...

[Phys. Rev. E 91, 022717] Published Wed Feb 25, 2015

]]>We discuss the problem of the detection of hyperchaotic oscillations in coupled nonlinear systems when the available information about this complex dynamical regime is very limited. We demonstrate the ability of diagnosing the chaos-hyperchaos transition from return times into a Poincaré section and...

[Phys. Rev. E 91, 022921] Published Wed Feb 25, 2015

]]>Simple practical expressions that allow estimation of thermodynamic properties of Yukawa fluids in a wide range of coupling, up to the fluid-solid phase transition, are presented. These expressions demonstrate excellent agreement with the available results from numerical simulations. The approach pr...

[Phys. Rev. E 91, 023108] Published Wed Feb 25, 2015

]]>A hybrid spin-electron system defined on a one-dimensional double-tetrahedral chain, in which the localized Ising spin regularly alternates with two mobile electrons delocalized over a triangular plaquette, is exactly solved with the help of generalized decoration-iteration transformation. It is sho...

[Phys. Rev. E 91, 022134] Published Tue Feb 24, 2015

]]> An effective temperature θ, conjugated to a generalized entropy s_{q}, was introduced recently for a system of interacting particles. Since θ presents values much higher than those of typical room temperatures T≪θ, the thermal noise can be neglected (T/θ≃0) in these systems. Moreover, the consistency o...

[Phys. Rev. E 91, 022135] Published Tue Feb 24, 2015

]]>Molecular dynamic simulations were carried out on rigid diatomic molecules, which exhibit both α (structural) and β (secondary) dynamics. The relaxation scenarios range from onset behavior, in which a distinct α process emerges on cooling, to merging behavior, associated with two relaxation peaks th...

[Phys. Rev. E 91, 022310] Published Tue Feb 24, 2015

]]>A new formalism determines whether quantum-mechanical effects are necessary for photoactivated biological processes to occur.

[Phys. Rev. E 91, 022714] Published Tue Feb 24, 2015

]]>We study the behavior of two macroions with dissociable charge groups, regulated by local variables such as pH and electrostatic potential, immersed in a monovalent salt solution, considering cases where the net charge can either change sign or remain of the same sign depending on these local parame...

[Phys. Rev. E 91, 022715] Published Tue Feb 24, 2015

]]>A basic understanding of biological membranes is of paramount importance as these membranes comprise the very building blocks of life itself. Cells depend in their function on a range of properties of the membrane, which are important for the stability and function of the cell, information and nutri...

[Phys. Rev. E 91, 022716] Published Tue Feb 24, 2015

]]>The majority-vote model with noise is one of the simplest nonequilibrium statistical model that has been extensively studied in the context of complex networks. However, the relationship between the critical noise where the order-disorder phase transition takes place and the topology of the underlyi...

[Phys. Rev. E 91, 022816] Published Tue Feb 24, 2015

]]>We present breather solutions of the quintic integrable equation of the Schrödinger hierarchy. This equation has terms describing fifth-order dispersion and matching nonlinear terms. Using a Darboux transformation, we derive first-order and second-order breather solutions. These include first- and s...

[Phys. Rev. E 91, 022919] Published Tue Feb 24, 2015

]]>We evidence an interesting kind of hybrid synchronization in coupled chaotic systems where complete synchronization is restricted to only a subset of variables of two systems while other subset of variables may be in a phase synchronized state or desynchronized. Such hybrid synchronization is a gene...

[Phys. Rev. E 91, 022920] Published Tue Feb 24, 2015

]]>When placed onto a vibrating liquid bath, a droplet may adopt a permanent bouncing behavior, depending on both the forcing frequency and the forcing amplitude. The relationship between the droplet deformations and the bouncing mechanism is studied experimentally and theoretically through an asymmetr...

[Phys. Rev. E 91, 023017] Published Tue Feb 24, 2015

]]>A consistent theoretical model that can be applied in a wide range of densities and temperatures is necessary for understanding the variation of a material's properties during compression and heating. Taking argon as an example, we show that the combination of self-consistent fluid variational theor...

[Phys. Rev. E 91, 023106] Published Tue Feb 24, 2015

]]>A self-generation mechanism of magnetic dipoles and the anomalous energy dissipation of fast electrons in a magnetized beam-plasma system are presented. Based on two-dimensional particle-in-cell simulations, it is found that the magnetic dipoles are self-organized and play important roles in the be...

[Phys. Rev. E 91, 023107] Published Tue Feb 24, 2015

]]>We investigate coupled nonlinear Schrödinger equations (NLSEs) with variable coefficients and gain. The coupled NLSE is a model equation for optical soliton propagation and their interaction in a multimode fiber medium or in a fiber array. By using Hirota's bilinear method, we obtain the bright-brig...

[Phys. Rev. E 91, 023210] Published Tue Feb 24, 2015

]]>Current implementations of fluctuating lattice Boltzmann equations (FLBEs) describe single component fluids. In this paper, a model based on the continuum kinetic Boltzmann equation for describing multicomponent fluids is extended to incorporate the effects of thermal fluctuations. The thus obtained...

[Phys. Rev. E 91, 023313] Published Tue Feb 24, 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] Published Mon Feb 23, 2015

]]>The computation of the critical exponent η characterizing the universal elastic behavior of crystalline membranes in the flat phase continues to represent challenges to theorists as well as computer simulators that manifest themselves in a considerable spread of numerical results for η published in ...

[Phys. Rev. E 91, 022132] Published Mon Feb 23, 2015

]]>Motivated by the recently observed phenomenon of topology trivialization of potential energy landscapes (PELs) for several statistical mechanics models, we perform a numerical study of the finite-size 2-spin spherical model using both numerical polynomial homotopy continuation and a reformulation vi...

[Phys. Rev. E 91, 022133] Published Mon Feb 23, 2015

]]>