Even though chiral nematic phases were the first liquid crystals experimentally observed more than a century ago, the origin of the thermodynamic stability of cholesteric states is still unclear. In this Rapid Communication we address the problem by means of a density functional theory for the equil...

[Phys. Rev. E 90, 020503] Published Wed Aug 27, 2014

]]>We show that the relaxation dynamics near a glass transition with continuous ergodicity breaking can be endowed with a geometric interpretation based on percolation theory. At the mean-field level this approach is consistent with the mode-coupling theory (MCT) of type-A liquid-glass transitions and ...

[Phys. Rev. E 90, 020301] Published Tue Aug 26, 2014

]]>Numerical simulations reveal emergence of subspinodal length scales in spontaneous dewetting of nonslipping unstable thin liquid films on homogeneous substrates if the liquid viscosity decreases with decrease in film thickness.

[Phys. Rev. E 90, 020401] Published Mon Aug 25, 2014

]]>We show that the theoretical machinery developed for the Kardar-Parisi-Zhang (KPZ) class in low dimensions is obeyed by the restricted solid-on-solid model for substrates with dimensions up to d=6. Analyzing different restriction conditions, we show that the height distributions of the interface are...

[Phys. Rev. E 90, 020103] Published Fri Aug 22, 2014

]]>We show that the flow of granular material inside a two-dimensional flat bottomed hopper is altered significantly by having more than one exit orifice. For hoppers with small orifice widths, intermittent flow through one orifice enables the resumption of flow through the adjacent jammed orifice, thu...

[Phys. Rev. E 90, 020201] Published Wed Aug 20, 2014

]]>The binodal of a boson square-well fluid is determined as a function of the particle mass through a quantum Gibbs ensemble Monte Carlo algorithm devised by R. Fantoni and S. Moroni [J. Chem. Phys. (to be published)]. In the infinite mass limit we recover the classical result. As the particle mass de...

[Phys. Rev. E 90, 020102] Published Mon Aug 18, 2014

]]>Very recently, interferometric methods have been proposed to measure the full statistics of work performed on a driven quantum system [Dorner et al., Phys. Rev. Lett. 110, 230601 (2013)PRLTAO10.1103/PhysRevLett.110.230601 and Mazzola et al., Phys. Rev. Lett. 110, 230602 (2013)PRLTAO10.1103/PhysRevLe...

[Phys. Rev. E 90, 020101] Published Tue Aug 12, 2014

]]>The present work investigates the acceleration of test particles, relevant to the solar-wind problem, in balanced and imbalanced magnetohydrodynamic turbulence (terms referring here to turbulent states possessing zero and nonzero cross helicity, respectively). These turbulent states, obtained numeri...

[Phys. Rev. E 90, 021101] Published Mon Aug 11, 2014

]]>We predict theoretically the existence of a class of colloidal structures in nematic liquid crystal (NLC) cells, which are induced by surface patterns on the plates of the cell (like cells with UV-irradiated polyamide surfaces using micron sized masks in front of the cell). These bulk structures ari...

[Phys. Rev. E 90, 020502] Published Thu Aug 07, 2014

]]>We demonstrate that the morphological diversity in liquid-crystal hybrid systems is much richer than previously anticipated. More importantly, we reveal the existence of a dual mechanism for self-assembly of nanoparticles via morphological instabilities at phase boundaries. Using numerical simulatio...

[Phys. Rev. E 90, 020501] Published Thu Aug 07, 2014

]]>We study the interaction of quasi-one-dimensional (quasi-1D) dissipative solitons (DSs). Starting with quasi-1D solutions of the cubic-quintic complex Ginzburg-Landau (CGL) equation in their temporally asymptotic state as the initial condition, we find, as a function of the approach velocity and the...

[Phys. Rev. E 90, 020901] Published Mon Aug 04, 2014

]]>Neural field models are used to study macroscopic spatiotemporal patterns in the cortex. Their derivation from networks of model neurons normally involves a number of assumptions, which may not be correct. Here we present an exact derivation of a neural field model from an infinite network of theta ...

[Phys. Rev. E 90, 010901] Published Mon Jul 28, 2014

]]>Hydrodynamic instabilities are a major obstacle in the quest to achieve ignition as they cause preexisting capsule defects to grow and ultimately quench the fusion burn in experiments at the National Ignition Facility. Unstable growth at the ablation front has been dramatically reduced in implosions...

[Phys. Rev. E 90, 011102] Published Fri Jul 25, 2014

]]>We present a method which uses Feynman-like diagrams to calculate the statistical quantities of embedded many-body random matrix problems. The method provides a promising alternative to existing techniques and offers many important simplifications. We use it here to find the fourth, sixth, and eight...

[Phys. Rev. E 90, 010102] Published Fri Jul 25, 2014

]]>Recently, a maximum pseudolikelihood (MPL) inference method has been successfully applied to statistical physics models with intractable likelihoods. We use information theory to derive a relation between the pseudolikelihood and likelihood functions. Furthermore, we show the consistency of the pseu...

[Phys. Rev. E 90, 010101] Published Fri Jul 25, 2014

]]>We construct a structural order parameter from the energy equipartition of normal modes of vibration to quantify the structural heterogeneity in disordered solids. The order parameter exhibits strong spatial correlations with low-temperature dynamics and local structural entropy. To characterize the...

[Phys. Rev. E 90, 010401] Published Thu Jul 24, 2014

]]>Kinetic and fluid equations are derived for the dynamics of classical inhomogeneous trapped plasmas in the strong coupling regime. The starting point is an extended Singwi-Tosi-Land-Sjölander (STLS) ansatz for the dynamic correlation function, which is allowed to depend on time and both particle coo...

[Phys. Rev. E 90, 011101] Published Mon Jul 21, 2014

]]>The absolute values of the effective attenuation length of an electron in liquid water are determined using soft x-ray O1s photoemission spectroscopy of a liquid beam of water without employing any theoretical estimation or computationally obtained value. The effective attenuation length is greater ...

[Phys. Rev. E 90, 010302] Published Mon Jul 14, 2014

]]>The author presents a practical method to infer a probability distribution of continuous variables from discrete data, using a modification of previous field-theoretic approaches. A computational implementation for one- and two-dimensional problems is developed.

[Phys. Rev. E 90, 011301] Published Fri Jul 11, 2014

]]>We investigate the influence of fluid flows on the propagation of chemical fronts arising in Fisher-Kolmogorov-Petrovsky-Piskunov (FKPP) type models. We develop an asymptotic theory for the front speed in a cellular flow in the limit of small molecular diffusivity and fast reaction, i.e., large Pécl...

[Phys. Rev. E 90, 011001] Published Fri Jul 11, 2014

]]>In this work, we investigate the balance between the nonlinear and linear interaction energy of an interparticle anharmonic system in the vicinity of the ground state condensate. As a result, we find that the nonlinear interaction energy is very significant in the vicinity of each degree of freedom....

[Phys. Rev. E 90, 011201] Published Tue Jul 08, 2014

]]>The anomalous preasymptotic transport of colloids in a microfluidic capillary flow due to hydrodynamic dispersion is measured by noninvasive nuclear magnetic resonance (NMR). The data indicate a reduced scaling of mean squared displacement with time from the 〈z(t)2〉c∼t3 behavior for the interaction ...

[Phys. Rev. E 90, 010301] Published Wed Jul 02, 2014

]]>We describe dipolar nematic colloids comprising mutually bound solid microspheres, three-dimensional skyrmions, and point defects in a molecular alignment field of chiral nematic liquid crystals. Nonlinear optical imaging and numerical modeling based on minimization of Landau–de Gennes free energy r...

[Phys. Rev. E 89, 060502] Published Mon Jun 30, 2014

]]>Phase-field models are powerful tools to tackle free-boundary problems. For phase transformations involving diffusion, the evolution of the nonconserved phase field is coupled to the evolution of the conserved diffusion field. Introducing the kinetic cross coupling between these two fields [E. A. Br...

[Phys. Rev. E 89, 060402] Published Mon Jun 30, 2014

]]>Dense-plasma-focus (DPF) Z-pinch devices are sources of copious high-energy electrons and ions, x rays, and neutrons. The mechanisms through which these physically simple devices generate such high-energy beams in a relatively short distance are not fully understood and past optimization efforts of ...

[Phys. Rev. E 89, 061101] Published Thu Jun 26, 2014

]]>We report a different kind of particle clustering caused purely by gravity, discovered in our simulation of particle-laden turbulence. Clustering in a vertical strip pattern forms when strong gravity acts on heavy particles. This phenomenon is explained by the skewness of the flow velocity gradient ...

[Phys. Rev. E 89, 061004] Published Thu Jun 26, 2014

]]>The nonequilibrium absorbing phase transition of the discrete conserved Manna model was studied via Monte Carlo simulations on a one-dimensional chain, using the natural initial states with a sequential update. The critical density of the particles was found to be smaller than the recently reported ...

[Phys. Rev. E 89, 060101] Published Wed Jun 25, 2014

]]>Premelted water that is adsorbed to particle surfaces and confined to capillary regions remains in the liquid state well below the bulk melting temperature and can supply the segregated growth of ice lenses. Using macroscopic measurements of ice-lens initiation position in step-freezing experiments,...

[Phys. Rev. E 89, 060401] Published Tue Jun 24, 2014

]]>A new general class of exact solutions is presented for the time evolution of a bubble of arbitrary initial shape in a Hele-Shaw cell when surface tension effects are neglected. These solutions are obtained by conformal mapping the viscous flow domain to an annulus in an auxiliary complex plane. It ...

[Phys. Rev. E 89, 061003] Published Fri Jun 20, 2014

]]>Propulsion at microscopic scales is often achieved through propagating traveling waves along hairlike organelles called flagella. Taylor's two-dimensional swimming sheet model is frequently used to provide insight into problems of flagellar propulsion. We derive numerically the large-amplitude wave ...

[Phys. Rev. E 89, 060701] Published Thu Jun 19, 2014

]]>For a shell model of the fully developed turbulence and the incompressible Navier-Stokes equations in the Fourier space, when a Gaussian white noise is artificially added to the equation of each mode, an expression of the mean linear response function in terms of the velocity correlation functions i...

[Phys. Rev. E 89, 061002] Published Wed Jun 18, 2014

]]>Miniature vortex generators (MVGs) are able to delay the transition to turbulence in a flat plate boundary layer if properly designed. Unfortunately, the natural recovery of the modulated laminar base flow in the streamwise direction is of exponential space scale and hence the passive laminar contro...

[Phys. Rev. E 89, 061001] Published Tue Jun 17, 2014

]]>Pole balancing is a key task for probing the prospective control that organisms must engage in for purposeful action. The temporal structure of pole-balancing behaviors will reflect the on-line operation of control mechanisms needed to maintain an upright posture. In this study, signatures of multif...

[Phys. Rev. E 89, 060903] Published Tue Jun 17, 2014

]]>In this Rapid Communication we demonstrate effects of a new mechanism of adiabaticity destruction in Hamiltonian systems with a separatrix in the phase space. In contrast to the slow diffusive-like destruction typical for many systems, this new mechanism is responsible for very fast chaotization in ...

[Phys. Rev. E 89, 060902] Published Tue Jun 17, 2014

]]>We present a symplectic integrator, based on the implicit midpoint method, for classical spin systems where each spin is a unit vector in R3. Unlike splitting methods, it is defined for all Hamiltonians and is O(3)-equivariant, i.e., coordinate-independent. It is a rare example of a generating funct...

[Phys. Rev. E 89, 061301] Published Fri Jun 13, 2014

]]>We discuss the desynchronization transition in networks of globally coupled identical oscillators with attractive and repulsive interactions. We show that, if attractive and repulsive groups act in antiphase or close to that, a solitary state emerges with a single repulsive oscillator split up from ...

[Phys. Rev. E 89, 060901] Published Mon Jun 09, 2014

]]> We present magneto-optic measurements on two materials that form the recently discovered twist-bend nematic (N_{tb}) phase. This intriguing state of matter represents a fluid phase that is orientationally anisotropic in three directions and also exhibits translational order with periodicity several tim...

[Phys. Rev. E 89, 060501] Published Fri Jun 06, 2014

]]>The authors devised a technique in which a micropipette is used both to clamp a model organism and also to measure forces involved in the undulatory swimming motions of this worm.

[Phys. Rev. E 89, 050701] Published Fri May 30, 2014

]]>We investigate the phase sequence of biaxial liquid crystals, based on a general quadratic model Hamiltonian over the relevant parameter space, with a Monte Carlo simulation which constructs equilibrium ensembles of microstates, overcoming possible (free) energy barriers (combining entropic and fron...

[Phys. Rev. E 89, 050501] Published Tue May 27, 2014

]]>We propose a phase diagram for the shear flow of dry granular particles in two dimensions based on simulations and a phenomenological Landau theory for a nonequilibrium first-order phase transition. Our approach incorporates both frictional as well as frictionless particles. The most important featu...

[Phys. Rev. E 89, 050201] Published Tue May 27, 2014

]]>Observability of state variables and parameters of a dynamical system from an observed time series is analyzed and quantified by means of the Jacobian matrix of the delay coordinates map. For each state variable and each parameter to be estimated, a measure of uncertainty is introduced depending on ...

[Phys. Rev. E 89, 050902] Published Thu May 15, 2014

]]>We theoretically study the motion of surface-active Janus particles, driven by an effective slip velocity due to a nonuniform temperature or concentration field ψ. With parameters realized in thermal traps, we find that the torque exerted by the gradient ∇ψ inhibits rotational diffusion and favors a...

[Phys. Rev. E 89, 050303] Published Wed May 14, 2014

]]>We present experiments and simulations that show a fundamental scaling for both the rheology and microstructure of flowing gels. Unique flow-SANS measurements demonstrate that the structure orients along both the neutral and compression axis. We quantify the anisotropy using a single parameter, αn, ...

[Phys. Rev. E 89, 050302] Published Mon May 12, 2014

]]>We investigated the short-wavelength longitudinal and transverse collective dynamics of the fluid and gel phases of phospholipid bilayers by means of molecular dynamics simulation. Similarly to a crystal, the spectrum of collective excitations in a bilayer consists of longitudinal and transverse aco...

[Phys. Rev. E 89, 050301] Published Mon May 12, 2014

]]>In this Rapid Communication we consider a front of transition between metastable and stable states in a conservative system. Due to the difference of energies between initial and finite states, such transition front can propagate only while radiating energy. A simulation of such a process in a one-d...

[Phys. Rev. E 89, 050901] Published Thu May 08, 2014

]]>The classical wave-particle Hamiltonian is considered in its generalized version, where two modes are assumed to interact with the coevolving charged particles. The equilibrium statistical mechanics solution of the model is worked out analytically, both in the canonical and the microcanonical ensemb...

[Phys. Rev. E 89, 050101] Published Wed May 07, 2014

]]>Many complex systems demand manifold resources to be supplied from distinct channels to function properly, e.g., water, gas, and electricity for a city. Here, we study a model for viability of such systems demanding more than one type of vital resource be produced and distributed by resource nodes i...

[Phys. Rev. E 89, 040802] Published Wed Apr 30, 2014

]]>A recent proposal in which the equation of state of a polydisperse hard-sphere mixture is mapped onto that of the one-component fluid is extrapolated beyond the freezing point to estimate the jamming packing fraction ϕJ of the polydisperse system as a simple function of M1M3/M22, where Mk is the kth...

[Phys. Rev. E 89, 040302] Published Wed Apr 30, 2014

]]>Chemical reactions subjected to time-varying external forces cannot generally be described through a fixed bottleneck near the transition-state barrier or dividing surface. A naive dividing surface attached to the instantaneous, but moving, barrier top also fails to be recrossing-free. We construct ...

[Phys. Rev. E 89, 040801] Published Mon Apr 28, 2014

]]>Aging, the dependence of the dynamics of a physical process on the time ta since its original preparation, is observed in systems ranging from the motion of charge carriers in amorphous semiconductors over the blinking dynamics of quantum dots to the tracer dispersion in living biological cells. Her...

[Phys. Rev. E 89, 040101] Published Mon Apr 28, 2014

]]>The method of symbolic transfer entropy has been applied to analyze the behavior of charged-particle systems under the influence of an ion focus (wakefield) in a dusty plasma. Using long-run experiments under various plasma and trapping conditions, it is revealed from the transfer entropy that infor...

[Phys. Rev. E 89, 041103] Published Thu Apr 24, 2014

]]>Relative dispersion of a passive scalar plume was investigated in uniformly sheared, nearly homogeneous, turbulent flow with Reλ≈150 using planar laser-induced fluorescence. Mean concentration maps were determined both in the laboratory frame and in a frame attached to the instantaneous center of ma...

[Phys. Rev. E 89, 041005] Published Thu Apr 24, 2014

]]>We show the existence of an intermittent transition from temporal chaos to turbulence in a spatially extended dynamical system, namely, the forced and damped one-dimensional nonlinear Schrödinger equation. For some values of the forcing parameter, the system dynamics intermittently switches between ...

[Phys. Rev. E 89, 040901] Published Thu Apr 24, 2014

]]>The Gauss-Laguerre quadrature method is used on the Cartesian semiaxes in the momentum space to construct a family of lattice Boltzmann models. When all quadrature orders Qx, Qy, Qz equal N+1, the Laguerre lattice Boltzmann model LLB(Qx,Qy,Qz) exactly recovers all moments up to order N of the Maxwel...

[Phys. Rev. E 89, 041301] Published Wed Apr 23, 2014

]]>We investigate the microresponse of the quasi-two-dimensional dusty plasma liquid around freezing to the shear force from a laser beam through the center of the liquid cluster. It is found that the cold liquid can be viewed as a patchwork of crystalline ordered domains (CODs) which are solidlike but...

[Phys. Rev. E 89, 041102] Published Mon Apr 21, 2014

]]>Reaction fronts evolving in a porous medium exhibit a rich dynamical behavior. In the presence of an adverse flow, experiments show that the front slows down and eventually gets pinned, displaying a particular sawtooth shape. Extensive numerical simulations of the hydrodynamic equations confirm the ...

[Phys. Rev. E 89, 041004] Published Fri Apr 18, 2014

]]>We derive an exact equation governing two-particle backwards mean-squared dispersion for both deterministic and stochastic tracer particles in turbulent flows. For the deterministic trajectories, we probe the consequences of our formula for short times and arrive at approximate expressions for the m...

[Phys. Rev. E 89, 041003] Published Thu Apr 17, 2014

]]>We report a combined dynamic light scattering and neutron spin-echo (NSE) study on vesicles composed of the phospholipid 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine under the influence of varying amounts of perfluorooctanoic acid. We study local lipid bilayer undulations using NSE on time scale...

[Phys. Rev. E 89, 040702] Published Thu Apr 17, 2014

]]>We study the dynamics of high-order rogue waves (RWs) in two-component coupled nonlinear Schrödinger equations. We find that four fundamental rogue waves can emerge from second-order vector RWs in the coupled system, in contrast to the high-order ones in single-component systems. The distribution sh...

[Phys. Rev. E 89, 041201] Published Thu Apr 10, 2014

]]>Nonlinear dynamics of surface gravity waves trapped by an opposing jet current is studied analytically and numerically. For wave fields narrow band in frequency but not necessarily with narrow angular distributions the developed asymptotic weakly nonlinear theory based on the modal approach of Shrir...

[Phys. Rev. E 89, 041002] Published Wed Apr 09, 2014

]]>In a recent paper [Mandal et al., Phys. Rev. E 88, 022129 (2013)], the nature of spatial correlations of plasticity in hard-sphere glasses was addressed both via computer simulations and in experiments. It was found that the experimentally obtained correlations obey a power law, whereas the correla...

[Phys. Rev. E 89, 040301] Published Wed Apr 09, 2014

]]>We present a theory of turbulent elasticity, a property of drift-wave–zonal-flow (DW-ZF) turbulence, which follows from the time delay in the response of DWs to ZF shears. An emergent dimensionless parameter |〈v〉′|/Δωk is found to be a measure of the degree of Fickian flux-gradient relation breaking...

[Phys. Rev. E 89, 041101] Published Fri Apr 04, 2014

]]>Recent numerical simulations have shown the strong impact of helicity on homogeneous rotating hydrodynamic turbulence. The main effect can be summarized through the law n+ñ=−4, where n and ñ are the power law indices of the one-dimensional energy and helicity spectra, respectively. We investigate ...

[Phys. Rev. E 89, 041001] Published Wed Apr 02, 2014

]]>Morphologies of a double-bilayer vesicle were explored experimentally by fast confocal laser microscopy and numerically by a dynamically triangulated membrane model with area-difference elasticity. The confinement was found to induce several shapes of the inner vesicles that had not been observed in...

[Phys. Rev. E 89, 040701] Published Tue Apr 01, 2014

]]>Probing deeper into the existing issues regarding the exit probability (EP) in one-dimensional dynamical models, we consider several models where the states are represented by Ising spins and the information flows inwards. At zero temperature, these systems evolve to either of two absorbing states. ...

[Phys. Rev. E 89, 030103] Published Mon Mar 31, 2014

]]>Diffusion in nonhomogeneous media is described by a dynamical process driven by a general Lévy noise and subordinated to a random time; the subordinator depends on the position. This problem is approximated by a multiplicative process subordinated to a random time: it separately takes into account e...

[Phys. Rev. E 89, 030102] Published Mon Mar 31, 2014

]]>The translocation time of a polymer through a pore under the influence of an external field depends on a number of parameters, the most important of which are the field strength, the interaction with the pore, and the confinement entropy. Experimentally, the translocation is dominated either by the ...

[Phys. Rev. E 89, 030601] Published Fri Mar 28, 2014

]]>We present a continuum theoretical model describing the impact of chirality on nematic systems with large flexoelectricity. As opposed to achiral materials, where only one type of the modulated structure can exist in a given material, the model predicts that chirality can stabilize several modulated...

[Phys. Rev. E 89, 030501] Published Wed Mar 26, 2014

]]>We propose a method to reconstruct the density of a luminescent source in a highly scattering medium from ultrasound-modulated optical measurements. Our approach is based on the solution to a hybrid inverse source problem for the diffusion equation.

[Phys. Rev. E 89, 031201] Published Thu Mar 13, 2014

]]>The spatial expansion of a population in a nonuniform environment may benefit from phenotypic heterogeneity with interconverting subpopulations using different survival strategies. We analyze the crossing of an antibiotic-containing environment by a bacterial population consisting of rapidly growing...

[Phys. Rev. E 89, 030702] Published Wed Mar 12, 2014

]]>We describe a general simulation scheme for assessing the thermodynamic consequences of neglecting many-body effects in coarse-grained models of complex fluids. The method exploits the fact that the asymptote of a simple-to-measure structural function provides direct estimates of virial coefficients...

[Phys. Rev. E 89, 031301] Published Mon Mar 10, 2014

]]>A wide range of networked systems exhibit highly connected nodes (hubs) as prominent structural elements. The functional roles of hubs in the collective nonlinear dynamics of many such networks, however, are not well understood. Here, we propose that hubs in neural circuits may activate local signal...

[Phys. Rev. E 89, 030701] Published Mon Mar 10, 2014

]]>Three-dimensional fast magnetic reconnection driven by two ultraintense femtosecond laser pulses is investigated by relativistic particle-in-cell simulation, where the two paralleled incident laser beams are shot into a near-critical plasma layer to form a magnetic reconnection configuration in self...

[Phys. Rev. E 89, 031101] Published Fri Mar 07, 2014

]]>Activated escape of a Brownian particle from the domain of attraction of a stable focus over a limit cycle exhibits non-Kramers behavior: it is non-Poissonian. When the attractor is moved closer to the boundary, oscillations can be discerned in the survival probability. We show that these oscillatio...

[Phys. Rev. E 89, 030101] Published Fri Mar 07, 2014

]]>A key open question in the glass transition field is whether a finite temperature thermodynamic transition to the glass state exists or not. Recent simulations of coupled replicas in atomistic models have found signatures of a static transition as a function of replica coupling. This can be viewed a...

[Phys. Rev. E 89, 030301] Published Mon Mar 03, 2014

]]>The problem of stochastic advection of passive particles by circulating conserved flows on networks is formulated and investigated. The particles undergo transitions between the nodes, with the transition rates determined by the flows passing through the links. Such stochastic advection processes le...

[Phys. Rev. E 89, 020801] Published Fri Feb 28, 2014

]]>We show results of our high force (up to 1.8 nN) atomic force microscopy force spectroscopy measurements of a double stranded DNA. We have found that the force spectra of torsionally constrained molecules display a small plateau occurring at a force of approximately 1 nN. This transition is absent i...

[Phys. Rev. E 89, 020701] Published Thu Feb 27, 2014

]]>We report a molecular dynamics simulation demonstrating a fast spontaneous liquid-liquid phase separation of water and a subsequent slow crystallization to ice. It is found that supercooled water separates rapidly into low- and high-density domains so as to reduce the surface energy in the rectangul...

[Phys. Rev. E 89, 020301] Published Tue Feb 25, 2014

]]>Experiments in a modified Taylor-Couette device, spanning Reynolds numbers of 105 to greater than 106, reveal the nonlinear stability of astrophysically relevant flows. Nearly ideal rotation, expected in the absence of axial boundaries, is achieved for a narrow range of operating parameters. Departu...

[Phys. Rev. E 89, 021004] Published Mon Feb 24, 2014

]]>Concentrated suspensions may shear thin when the suspended particles form planar sheets that slide over one another with less friction than if the particles are randomly distributed. In a naive model the suspension is described by a mean effective viscosity and particles that collide with each other...

[Phys. Rev. E 89, 021003] Published Fri Feb 21, 2014

]]>Implications of the recently discovered effect of channeling of upstream extra particles for transport phenomena in a two-dimensional plasma crystal are discussed. Upstream particles levitated above the lattice layer and tended to move between the rows of lattice particles. An example of heat transp...

[Phys. Rev. E 89, 021101] Published Wed Feb 19, 2014

]]>Strongly confined active liquids are subject to unique hydrodynamic interactions due to momentum screening and lubricated friction by the confining walls. Using numerical simulations, we demonstrate that two-dimensional dilute suspensions of fore-aft asymmetric polar swimmers in a Hele-Shaw geometry...

[Phys. Rev. E 89, 021002] Published Wed Feb 19, 2014

]]>We study the statistical properties of orientation and rotation dynamics of elliptical tracer particles in two-dimensional, homogeneous, and isotropic turbulence by direct numerical simulations. We consider both the cases in which the turbulent flow is generated by forcing at large and intermediate ...

[Phys. Rev. E 89, 021001] Published Wed Feb 19, 2014

]]>Highly engineered materials are arousing great interest because of their ability to manipulate heat, as described by the coordinate transformation approach. Based on recently developed analog gravity models, we present how a simple device based on nematic liquid crystals can achieve in principle eit...

[Phys. Rev. E 89, 020501] Published Wed Feb 19, 2014

]]>A logarithmic oscillator has the outstanding property that the expectation value of its kinetic energy is constant for all stationary states. Recently the ansatz that this property can be used to define a Hamiltonian thermostat has been put forward and a suggestion has been made that this logarithmi...

[Phys. Rev. E 89, 021301] Published Tue Feb 18, 2014

]]>We present a powerful semiclassical expression to evaluate off-diagonal matrix elements of the evolution operator between quantum states constructed in the neighborhood of unstable short periodic orbits, which is valid up to the Heisenberg time. The expression is much easier to evaluate than the Van...

[Phys. Rev. E 89, 020901] Published Tue Feb 18, 2014

]]>A gas of inelastic rough spheres admits a spatially homogeneous base state which turns into a hydrodynamic state after a finite relaxation time. We show that this relaxation time is hardly dependent on the degree of inelasticity but increases dramatically with decreasing roughness. An accurate descr...

[Phys. Rev. E 89, 020202] Published Tue Feb 18, 2014

]]>The dynamics of an electron in a strong laser field can be significantly altered by radiation reaction. This usually results in a strongly damped motion, with the electron losing a large fraction of its initial energy. Here we show that the electron dynamics in a bichromatic laser pulse can be indir...

[Phys. Rev. E 89, 021201] Published Mon Feb 10, 2014

]]>A linear stability analysis of the Navier-Stokes (NS) granular hydrodynamic equations is performed to determine the critical length scale for the onset of vortices and clusters instabilities in granular dense binary mixtures. In contrast to previous attempts, our results (which are based on the solu...

[Phys. Rev. E 89, 020201] Published Mon Feb 10, 2014

]]>Using the ferroin- and the bathoferroin-catalyzed Belousov-Zhabotinsky (BZ) reaction embedded in the sodium-bis (2-ethylhexyl) sulfosuccinate (AOT) water-in-oil microemulsion, we observed different patterns occurring in two different solvents, hexane and octane. Turing patterns were found in both so...

[Phys. Rev. E 89, 010902] Published Thu Jan 30, 2014

]]>Many structural properties of conventional passive materials are known to arise from the symmetries of their microscopic constituents. By contrast, it is largely unclear how the interplay between particle shape and self-propulsion controls the meso- and macroscale behavior of active matter. Here we ...

[Phys. Rev. E 89, 010302] Published Tue Jan 28, 2014

]]>Cells often exhibit different and stable phenotypes from the same DNA sequence. Robustness and plasticity of such cellular states are controlled by diverse transcriptional and epigenetic mechanisms, among them the modification of biochemical marks on chromatin. Here, we develop a stochastic model th...

[Phys. Rev. E 89, 010701] Published Thu Jan 23, 2014

]]>We provide an experimental proof of concept for a robust, continuously rotating microstructure—consisting of two metallodielectric (gold-polystyrene) Janus particles rigidly attached to each other—which is driven in uniform ac fields by asymmetric induced-charge electro-osmosis. The pairs (doublets)...

[Phys. Rev. E 89, 011003] Published Thu Jan 16, 2014

]]> Using molecular dynamics simulations of UO_{2}—a type II superionic conductor—we identify a well-defined onset of dynamic disorder (T_{α}), which is remarkably correlated to a nontrivial advance of dynamical heterogeneity (DH). Quantified by the correlations in the dynamic propensity and van Hove self-cor...

[Phys. Rev. E 89, 010301] Published Thu Jan 16, 2014

]]>Motivated by the recent exact solution of the stationary-state Kardar-Parisi-Zhang (KPZ) statistics by Imamura and Sasamoto [Phys. Rev. Lett. 108, 190603 (2012)PRLTAO10.1103/PhysRevLett.108.190603], as well as a precursor experimental signature unearthed by Takeuchi [Phys. Rev. Lett. 110, 210604 (20...

[Phys. Rev. E 89, 010103] Published Thu Jan 16, 2014

]]>We derive the Kuramoto-Sivashinsky-type phase equation from the Kuramoto-Sakaguchi-type phase model via the Ott-Antonsen-type complex amplitude equation and demonstrate heterogeneity-induced collective-phase turbulence in nonlocally coupled individual-phase oscillators.

[Phys. Rev. E 89, 010901] Published Mon Jan 13, 2014

]]>We consider the Kardar-Parisi-Zhang equation for a circular interface in two dimensions, unconstrained by the standard small-slope and no-overhang approximations. Numerical simulations using an adaptive scheme allow us to elucidate the complete time evolution as a crossover between a short-time regi...

[Phys. Rev. E 89, 010401] Published Mon Jan 13, 2014

]]>We study the nonequilibrium critical behavior of the pair contact process with diffusion (PCPD) by means of nonperturbative functional renormalization group techniques. We show that usual perturbation theory fails because the effective potential develops a nonanalyticity at a finite length scale: Pe...

[Phys. Rev. E 89, 010102] Published Mon Jan 13, 2014

]]>The dynamics of surface gravity water waves can be described by the self-defocusing nonlinear Schrödinger equation. Recent observations of black solitons on the surface of water confirmed its validity for finite, below critical depth. The black soliton is a limiting case of a family of gray soliton ...

[Phys. Rev. E 89, 011002] Published Fri Jan 10, 2014

]]>We use the macroscopic fluctuation theory (MFT) to study large current fluctuations in nonstationary diffusive lattice gases. We identify two universality classes of these fluctuations, which we call elliptic and hyperbolic. They emerge in the limit when the deterministic mass flux is small compared...

[Phys. Rev. E 89, 010101] Published Fri Jan 10, 2014

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