We use small-angle neutron scattering (SANS) to study labeled short chains with and without the influence of an entangled and highly stretched surrounding environment of longer chains. We find unequivocal evidence of nematic effects as the blend chains in steady state flow are stretched a factor $\sim \mathrm{1.\dots}$

[Phys. Rev. E 94, 020502(R)] Published Wed Aug 24, 2016

]]>Using an event-driven molecular dynamics simulation, we show that simple monodisperse granular beads confined in coupled columns may oscillate as a different type of granular clock. To trigger this oscillation, the system needs to be driven against gravity into a density-inverted state, with a high-…

[Phys. Rev. E 94, 020901(R)] Published Tue Aug 23, 2016

]]>A laminar flow control technique based on spanwise mean velocity gradients (SVGs) has recently proven successful in delaying transition in boundary layers. Here we take advantage of a well-known nonlinear effect, namely, the interaction of two oblique waves at high amplitude, to produce spanwise mea…

[Phys. Rev. E 94, 021103(R)] Published Fri Aug 19, 2016

]]>When a droplet of water impacts a heated surface, the drop may be observed to bounce. Recently is has been found that small quantities ($\sim 100$ ppm) of polymer additives such as polyethylene oxide can significantly increase the maximum bouncing height of drops. This effect has been explained in terms o…

[Phys. Rev. E 94, 021102(R)] Published Tue Aug 16, 2016

]]>An accurate understanding of burn dynamics in implosions of cryogenically layered deuterium (D) and tritium (T) filled capsules, obtained partly through precision diagnosis of these experiments, is essential for assessing the impediments to achieving ignition at the National Ignition Facility. We pr…

[Phys. Rev. E 94, 021202(R)] Published Mon Aug 15, 2016

]]>Particle simulations confined by sharp walls usually develop an oscillatory density profile. For some applications, most notably soft matter liquids, this behavior is often unrealistic and one expects a monotonic density climb instead. To reconcile simulations with experiments, we propose mirror-and…

[Phys. Rev. E 94, 021302(R)] Published Mon Aug 15, 2016

]]>We develop a consistent stochastic thermodynamics for environments composed of thermodynamic reservoirs in an external conservative force field, that is, environments described by the generalized or Gibbs canonical ensemble. We demonstrate that small systems weakly coupled to such reservoirs exchang…

[Phys. Rev. E 94, 020102(R)] Published Fri Aug 12, 2016

]]>A universal characteristic of mesoscale turbulence in active suspensions is the emergence of a typical vortex length scale, distinctly different from the scale invariance of turbulent high-Reynolds number flows. Collective length-scale selection has been observed in bacterial fluids, endothelial tis…

[Phys. Rev. E 94, 020601(R)] Published Tue Aug 09, 2016

]]>Micron-sized colloidal spheres that are dispersed in an isotropic-nematic biphasic host suspension of charged rods (fd-virus particles) are shown to spontaneously form dimers, which exhibit a synchronized oscillatory motion. Dimer formation is not observed in the monophase of isotropic and nematic s…

[Phys. Rev. E 94, 020602(R)] Published Tue Aug 09, 2016

]]>This paper presents a simulation method that uses Monte Carlo sampling techniques in the microcanonical ensemble, instead of the more traditional scheme based on the canonical ensemble. The authors find that the method is computationally competitive with other, more advanced, techniques when applied to first-order transitions, and hint at the possibility of using a similar proposal to create tailored ensembles for specific problems.

[Phys. Rev. E 94, 021301(R)] Published Tue Aug 09, 2016

]]>This paper proposes a hydrodynamic theory of nematic liquid crystals confined to a thin curved surface. The authors use a variational approach to tackle the problem and find an underlying coupling between the curvature, the flow, and the nematic ordering of the liquid crystal. The results can be useful to describe more complicated systems such as topological defects interacting with a backflow, as well as active nematics.

[Phys. Rev. E 94, 020701(R)] Published Mon Aug 08, 2016

]]>We quantify the disorder-induced heating (DIH) of ultracold neutral plasmas (UCNPs) created from cold atoms in optical lattices with partial filling fractions, using a conservation of energy model involving the spatial correlations of the initial state and the equation of state in thermal equilibriu…

[Phys. Rev. E 94, 021201(R)] Published Mon Aug 08, 2016

]]>The two criteria of ensemble equivalence, i.e., macrostate equivalence and measure equivalence, are investigated for a general pair of states. Macrostate equivalence implies the two ensembles are indistinguishable by the measurement of macroscopic quantities obeying the large-deviation principle, an…

[Phys. Rev. E 94, 020101(R)] Published Fri Aug 05, 2016

]]>Bead-rod-spring models are the foundation of the kinetic theory of polymer solutions. We derive the diffusion equation for the probability density function of the configuration of a general bead-rod-spring model in short-correlated Gaussian random flows. Under isotropic conditions, we solve this equ…

[Phys. Rev. E 94, 020501(R)] Published Wed Aug 03, 2016

]]>A paradigmatic microswimmer is the three-linked-spheres model, which follows a minimalist approach for propulsion by shape shifting. As such, it has been the subject of numerous analytical and numerical studies. In this Rapid Communication, an experimental three-linked-spheres swimmer is created by …

[Phys. Rev. E 94, 021101(R)] Published Mon Aug 01, 2016

]]>The entanglement and localization in eigenstates of strongly chaotic subsystems are studied as a function of their interaction strength. Excellent measures for this purpose are the von Neumann entropy, Havrda-Charvát-Tsallis entropies, and the averaged inverse participation ratio. All the entropies …

[Phys. Rev. E 94, 010205(R)] Published Fri Jul 22, 2016

]]>We have performed spectrally resolved x-ray scattering measurements on highly compressed polystyrene at pressures of several tens of TPa (100 Mbar) created by spherically convergent shocks at the National Ignition Facility. Scattering data of line radiation at 9.0 keV were recorded from the dense pl…

[Phys. Rev. E 94, 011202(R)] Published Thu Jul 21, 2016

]]>Nematic elastomers and glasses are solids that display spontaneous distortion under external stimuli. Recent advances in the synthesis of sheets with controlled heterogeneities have enabled their actuation into nontrivial shapes with unprecedented energy density. Thus, these have emerged as powerful…

[Phys. Rev. E 94, 010701(R)] Published Wed Jul 20, 2016

]]>While the existence of stable knotted and linked vortex lines has been established in many experimental and theoretical systems, their existence in oscillatory systems and systems with nonlocal coupling has remained elusive. Here, we present strong numerical evidence that stable knots and links such…

[Phys. Rev. E 94, 010204(R)] Published Mon Jul 18, 2016

]]>To demonstrate that phase separation is a main mechanism of pattern formation for one of the spatiotemporal patterns emerging in the Ag and Sb electrodeposition system, I performed numerical simulations to model the mixed system of conductive and insulative materials under a steady electric field. F…

[Phys. Rev. E 94, 010203(R)] Published Thu Jul 14, 2016

]]>We propose a versatile “stabilization on demand” method for the suppression of modulation instability in oscillatory spatially extended nonlinear systems, based on a genetically optimized multifrequency spatiotemporal modulation of the potential. The method, which ensures full stabilization even for…

[Phys. Rev. E 94, 010202(R)] Published Wed Jul 13, 2016

]]>We investigate the onset of intermittency for vibrating elastic plate turbulence in the framework of the weak wave turbulence theory using a numerical approach. The spectrum of the displacement field and the structure functions of the fluctuations are computed for different forcing amplitudes. At lo…

[Phys. Rev. E 94, 011101(R)] Published Fri Jul 08, 2016

]]>Quantum work is usually determined from two projective measurements of the energy at the beginning and at the end of a thermodynamic process. However, this paradigm cannot be considered thermodynamically consistent as it does not account for the thermodynamic cost of these measurements. To remedy th…

[Phys. Rev. E 94, 010103(R)] Published Thu Jul 07, 2016

]]>It is shown that direct-drive implosions on the OMEGA laser have achieved core conditions that would lead to significant alpha heating at incident energies available on the National Ignition Facility (NIF) scale. The extrapolation of the experimental results from OMEGA to NIF energy assumes only tha…

[Phys. Rev. E 94, 011201(R)] Published Thu Jul 07, 2016

]]>In this Rapid Communication we express the partition function of the integrable elliptic solid-on-solid model with domain-wall boundary conditions as a single determinant. This representation appears naturally as the solution of a system of functional equations governing the model's partition functi…

[Phys. Rev. E 94, 010102(R)] Published Tue Jul 05, 2016

]]>The probability distribution for the free energy of directed polymers in random media (DPRM) with uncorrelated noise in $d=1+1$ dimensions satisfies the Tracy-Widom distribution. We inquire if and how this universal distribution is modified in the presence of spatially correlated noise. The width of t…

[Phys. Rev. E 94, 010101(R)] Published Fri Jul 01, 2016

]]>We develop a numerical test of hyperbolicity of chaotic dynamics in time-delay systems. The test is based on the angle criterion and includes computation of angle distributions between expanding, contracting, and neutral manifolds of trajectories on the attractor. Three examples are tested. For two …

[Phys. Rev. E 94, 010201(R)] Published Fri Jul 01, 2016

]]>By analyzing two kinetically constrained models of supercooled liquids we show that the anomalous transport of a driven tracer observed in supercooled liquids is another facet of the phenomenon of dynamical heterogeneity. We focus on the Fredrickson-Andersen and the Bertin-Bouchaud-Lequeux models. B…

[Phys. Rev. E 93, 060105(R)] Published Thu Jun 30, 2016

]]>The relation between classically chaotic dynamics and quantum localization is studied in a system that violates the assumptions of the Kolmogorov-Arnold-Moser (KAM) theorem, namely, the kicked rotor in a discontinuous potential barrier. We show that the discontinuous barrier induces chaos and more t…

[Phys. Rev. E 93, 060203(R)] Published Thu Jun 30, 2016

]]>Objects are represented in sensory systems by continuous manifolds due to sensitivity of neuronal responses to changes in physical features such as location, orientation, and intensity. What makes certain sensory representations better suited for invariant decoding of objects by downstream networks?…

[Phys. Rev. E 93, 060301(R)] Published Thu Jun 30, 2016

]]>The development and decay of a turbulent vortex tangle driven by the Gross-Pitaevskii equation is studied. Using a recently developed accurate and robust tracking algorithm, all quantized vortices are extracted from the fields. The Vinen's decay law for the total vortex length with a coefficient tha…

[Phys. Rev. E 93, 061103(R)] Published Thu Jun 30, 2016

]]>We use the concept of entropy power to derive a one-parameter class of information-theoretic uncertainty relations for pairs of conjugate observables in an infinite-dimensional Hilbert space. This class constitutes an infinite tower of higher-order statistics uncertainty relations, which allows one …

[Phys. Rev. E 93, 060104(R)] Published Wed Jun 29, 2016

]]>Pathogenic protein fibrils have been shown *in vitro* to have nucleation-dependent kinetics despite the fact that one-dimensional structures do not have the size-dependent surface energy responsible for the lag time in classical theory. We present a theory showing that the conformational entropy of th…

[Phys. Rev. E 93, 060401(R)] Published Wed Jun 29, 2016

]]>We investigate energy transfer across scales in three-dimensional compressible magnetohydrodynamic (MHD) turbulence, a model often used to study space and astrophysical plasmas. Analysis shows that kinetic and magnetic energies cascade conservatively from large to small scales in cases with varying …

[Phys. Rev. E 93, 061102(R)] Published Fri Jun 24, 2016

]]>We have used multiframe picosecond optical interferometry to make direct measurements of the hole boring velocity, ${v}_{\mathrm{HB}}$, of the density cavity pushed forward by a train of $\mathrm{C}{\mathrm{O}}_{2}$ laser pulses in a near critical density helium plasma. As the pulse train intensity rises, the increasing radiation pressure …

[Phys. Rev. E 93, 061202(R)] Published Fri Jun 24, 2016

]]>Examining a nonlinear instability of sliding rate on a frictional interface of elastic bodies, we investigate whether laboratory-constrained frictional relations suggest universal scaling under even the simplest of configurations. We find blowup solutions by solving an equivalent, classical problem …

[Phys. Rev. E 93, 060202(R)] Published Mon Jun 20, 2016

]]>Models of noninteracting fermions coupled to auxiliary classical fields are relevant to the understanding of a wide variety of problems in many-body physics, e.g., the description of manganites, diluted magnetic semiconductors, or strongly interacting electrons on lattices. We present a flat-histogr…

[Phys. Rev. E 93, 061301(R)] Published Mon Jun 20, 2016

]]>Utilizing the sparsity ubiquitous in real-world network connectivity, we develop a theoretical framework for efficiently reconstructing sparse feed-forward connections in a pulse-coupled nonlinear network through its output activities. Using only a small ensemble of random inputs, we solve this inve…

[Phys. Rev. E 93, 060201(R)] Published Thu Jun 16, 2016

]]>We studied angular distributions of x rays emitted in resonant recombination of highly charged iron and krypton ions, resolving dielectronic, trielectronic, and quadruelectronic channels. A tunable electron beam drove these processes, inducing x rays registered by two detectors mounted along and per…

[Phys. Rev. E 93, 061201(R)] Published Thu Jun 16, 2016

]]>We consider the problem of how to determine the force laws in an amorphous system of interacting particles. Given the positions of the centers of mass of the constituent particles we propose an algorithm to determine the interparticle force laws. Having $n$ different types of constituents we determine…

[Phys. Rev. E 93, 060601(R)] Published Fri Jun 10, 2016

]]>We propose a general coarse-graining method to derive a continuity equation that describes any dissipative system of repulsive particles interacting through short-ranged potentials. In our approach, the effect of particle-particle correlations is incorporated to the overall balance of energy, and a …

[Phys. Rev. E 93, 060103(R)] Published Thu Jun 09, 2016

]]>What happens when a continuously evolving stochastic process is interrupted with large changes at random intervals $\tau $ distributed as a power law $\sim {\tau}^{-(1+\alpha )};\phantom{\rule{0.28em}{0ex}}\alpha >0$? Modeling the stochastic process by diffusion and the large changes as abrupt resets to the initial condition, we obtain *exact* closed-form e…

[Phys. Rev. E 93, 060102(R)] Published Tue Jun 07, 2016

]]>While originally discovered in the context of the Gaussian unitary ensemble, the Tracy-Widom distribution also rules the height fluctuations of growth processes. This suggests that there might be other nonequilibrium processes in which the Tracy-Widom distribution plays an important role. In our con…

[Phys. Rev. E 93, 060101(R)] Published Mon Jun 06, 2016

]]>The earth's magnetic field is generated by dynamo action driven by convection in the outer core. For numerical reasons, inertial and viscous forces play an important role in geodynamo models; however, the primary dynamical balance in the earth's core is believed to be between buoyancy, Coriolis, and…

[Phys. Rev. E 93, 061101(R)] Published Fri Jun 03, 2016

]]>It is shown that a periodic emergence and destruction of an additional quantum number leads to an exponential growth of energy of a quantum mechanical system subjected to a slow periodic variation of parameters. The main example is given by systems (e.g., quantum billiards and quantum graphs) with p…

[Phys. Rev. E 93, 050203(R)] Published Thu May 26, 2016

]]>In order to mimic the Brownian particle in liquid, molecular dynamics calculations of dilute solutions of spherical fullerene molecules with various sizes in liquid Ar were performed. To establish the scaling equation for self-diffusion coefficient, $D$, of the fullerenes, the dependence of $D$ was exam…

[Phys. Rev. E 93, 050104(R)] Published Tue May 24, 2016

]]>Demonstrating how microscopic dynamics cause large systems to approach thermal equilibrium remains an elusive, longstanding, and actively pursued goal of statistical mechanics. We identify here a dynamical mechanism for thermalization in a general class of two-component dynamical Lorentz gases and p…

[Phys. Rev. E 93, 050103(R)] Published Mon May 23, 2016

]]>We report the experimental realization of a rod diffusing in a two-dimensional obstacle field following the single rod dynamics. We use a silver nanowire as our rod and two types of obstacles: repelling light beams and polymer pillars. We study the effect of hydrodynamic interactions on the transpor…

[Phys. Rev. E 93, 050602(R)] Published Mon May 23, 2016

]]>We derive the dependence of the Reynolds number $\text{Re}$ and the Nusselt number $\text{Nu}$ on the Rayleigh number $\text{Ra}$ and the Prandtl number $\text{Pr}$ in laminar vertical convection (VC), where a fluid is confined between two differently heated isothermal vertical walls. The boundary layer equations in laminar VC yield t…

[Phys. Rev. E 93, 051102(R)] Published Mon May 23, 2016

]]>Metamaterials enable the emergence of novel physical properties due to the existence of an underlying subwavelength structure. Here, we use the Faraday instability to shape the fluid-air interface with a regular pattern. This pattern undergoes an oscillating secondary instability and exhibits sponta…

[Phys. Rev. E 93, 050202(R)] Published Thu May 19, 2016

]]>We study experimentally and computationally the dynamics of granular flow during impacts where intruders strike a collection of disks from above. In the regime where granular force dynamics are much more rapid than the intruder motion, we find that the particle flow near the intruder is proportional…

[Phys. Rev. E 93, 050901(R)] Published Thu May 19, 2016

]]>We report a molecular dynamics simulation study of free-standing films of a blend of linear and cyclic polymer chains. We find that the composition of linear chains at the interface is enhanced relative to their *bulk* value for short chains but is depleted for long chains. Our findings are in agreeme…

[Phys. Rev. E 93, 050501(R)] Published Wed May 18, 2016

]]>We demonstrate particle clustering on macroscopic scales in a coupled nonequilibrium system where two species of particles are advected by a fluctuating landscape and modify the landscape in the process. The phase diagram generated by varying the particle-landscape coupling, valid for all particle d…

[Phys. Rev. E 93, 050102(R)] Published Mon May 16, 2016

]]>By sending a light beam on a homeotropic nematic liquid-crystal cell subjected to a voltage with a photosensitive wall, a stable matter vortex can be induced at the center of the beam. When the applied voltage is decreased, the vortex disappears from the illuminated region; however, the system shows…

[Phys. Rev. E 93, 050201(R)] Published Mon May 16, 2016

]]>We explore in this paper the phenomenon of photofocusing: a coupling between flow vorticity and biased swimming of microalgae toward a light source that produces a focusing of the microswimmer suspension. We combine experiments that investigate the stationary state of this phenomenon as well as the …

[Phys. Rev. E 93, 051101(R)] Published Mon May 16, 2016

]]>Depletion forces arise as a result of an entropic imbalance when small nonadsorbing objects are introduced in a suspension of large objects. This paper explores the experimental consequences of using nonspherical depletants whose anisotropy can be tuned using temperature, and thus it opens up the possibility of immediate, real-time tuning of the interparticle attraction.

[Phys. Rev. E 93, 050601(R)] Published Wed May 11, 2016

]]>We discuss the efficiency of a heat engine operating in a nonequilibrium steady state maintained by two heat reservoirs. Within the general framework of linear irreversible thermodynamics we derive a universal upper bound on the efficiency of the engine operating at arbitrary fixed power. Furthermor…

[Phys. Rev. E 93, 050101(R)] Published Mon May 09, 2016

]]>The relation between seismic moment and fractured area is crucial to earthquake hazard analysis. Experimental catalogs show multiple scaling behaviors, with some controversy concerning the exponent value in the large earthquake regime. Here, we show that the original Olami, Feder, and Christensen mo…

[Phys. Rev. E 93, 051001(R)] Published Fri May 06, 2016

]]>Biological neuronal networks exhibit highly variable spiking activity. Balanced networks offer a parsimonious model of this variability in which strong excitatory synaptic inputs are canceled by strong inhibitory inputs on average, and irregular spiking activity is driven by fluctuating synaptic cur…

[Phys. Rev. E 93, 040302(R)] Published Wed Apr 27, 2016

]]>Bombardment of a solid surface with a broad, obliquely incident ion beam frequently produces nanoscale surface ripples. The primary obstacle that prevents the adoption of ion bombardment as a nanofabrication tool is the high density of defects in the patterns that are typically formed. Our simulatio…

[Phys. Rev. E 93, 040802(R)] Published Mon Apr 25, 2016

]]>We perform discrete element simulations of homogeneous shearing of frictionless cylinders and show that the particles are characterized by orientational order and form a granular liquid crystal. For elongated and flat cylinders, the alignment is in the plane of shearing, while cylinders having an as…

[Phys. Rev. E 93, 040901(R)] Published Fri Apr 22, 2016

]]>We study the dynamics and the phase-space structures of Coulombic and self-gravitating versions of the classical one-dimensional three-body system with periodic boundary conditions. We demonstrate that such a three-body system may be reduced isomorphically to a spatially periodic system of a single …

[Phys. Rev. E 93, 040202(R)] Published Thu Apr 21, 2016

]]>We use microscopic density functional theory to study filling transitions in systems with long-ranged wall-fluid and short-ranged fluid-fluid forces occurring in a right-angle wedge. By changing the strength of the wall-fluid interaction we can induce both wetting and filling transitions over a wide…

[Phys. Rev. E 93, 040801(R)] Published Tue Apr 19, 2016

]]>What kind of one-dimensional modulated nematic structures (ODMNS) can form nonchiral and chiral bent-core and dimeric materials? Here, using the Landau–de Gennes theory of nematics, extended to account for molecular steric polarization, we study a possibility of formation of ODMNS, both in nonchiral…

[Phys. Rev. E 93, 040701(R)] Published Mon Apr 18, 2016

]]>The transformative influence of compressibility on the Kelvin-Helmholtz instability (KHI) at the interface between two fluid streams of different velocities is explicated. When the velocity difference is small (subsonic), shear effects dominate the interface flow dynamics causing monotonic roll-up o…

[Phys. Rev. E 93, 041102(R)] Published Mon Apr 18, 2016

]]>The additivity principle (AP) allows one to compute the current distribution in many one-dimensional nonequilibrium systems. Here we extend this conjecture to general $d$-dimensional driven diffusive systems, and validate its predictions against both numerical simulations of rare events and microscopi…

[Phys. Rev. E 93, 040103(R)] Published Thu Apr 14, 2016

]]>We introduce a model of adaptive temporal networks whose evolution is regulated by an interplay between node activity and dynamic exchange of information through links. We study the model by using a master equation approach. Starting from a homogeneous initial configuration, we show that temporal an…

[Phys. Rev. E 93, 040301(R)] Published Thu Apr 14, 2016

]]>The excitation of precursor solitons ahead of a rapidly moving object in a fluid, a spectacular phenomenon in hydrodynamics that has often been observed ahead of moving ships, has surprisingly not been investigated in plasmas where the fluid model holds good for low frequency excitations such as ion…

[Phys. Rev. E 93, 041201(R)] Published Thu Apr 14, 2016

]]>We study an ensemble of random walkers carrying internal noisy phase oscillators which are synchronized among the walkers by local interactions. Due to individual mobility, the interaction partners of every walker change randomly, hereby introducing an additional, independent source of fluctuations,…

[Phys. Rev. E 93, 040102(R)] Published Fri Apr 08, 2016

]]>We propose a unifying picture where the notion of generalized entropy is related to information theory by means of a group-theoretical approach. The group structure comes from the requirement that an entropy be well defined with respect to the composition of independent systems, in the context of a …

[Phys. Rev. E 93, 040101(R)] Published Wed Apr 06, 2016

]]>Distributions of eigenmodes are widely concerned in both bounded and open systems. In the realm of chaos, counting resonances can characterize the underlying dynamics (regular vs chaotic), and is often instrumental to identify classical-to-quantum correspondence. Here, we study, both theoretically a…

[Phys. Rev. E 93, 040201(R)] Published Mon Apr 04, 2016

]]>An interface structure between turbulence and laminar flow is investigated in two-dimensional channel flow. This spatially localized structure not only sustains itself but also converts the laminar state into turbulence actively. A filtered simulation technique is introduced to understand the invadi…

[Phys. Rev. E 93, 041101(R)] Published Mon Apr 04, 2016

]]>Real-time prediction of signals is a task often encountered in control problems as well as by living systems. Here, a parsimonious prediction approach based on the coupling of a linear relaxation-delay system to a smooth, stationary signal is described. The resulting anticipatory relaxation dynamics…

[Phys. Rev. E 93, 030201(R)] Published Wed Mar 30, 2016

]]>Granular flows in rotating drums transition between two regimes characterized by straight and curved free surfaces. Here we predict this behavior using a depth-integrated theory applicable to general eroding flows. Closure is achieved by a local $\mu \left(I\right)$ rheology and an equation for kinetic energy. Span…

[Phys. Rev. E 93, 030902(R)] Published Mon Mar 28, 2016

]]>An interferometric imaging technique has been proposed to instantly measure the diameter of individual spherical dust particles suspended in a gas discharge plasma. The technique is based on the defocused image analysis of both spherical particles and their binary agglomerates. Above a critical diam…

[Phys. Rev. E 93, 031201(R)] Published Thu Mar 24, 2016

]]>Theoretical attempts proposed so far to describe ordinary percolation processes on real-world networks rely on the locally treelike ansatz. Such an approximation, however, holds only to a limited extent, because real graphs are often characterized by high frequencies of short loops. We present here …

[Phys. Rev. E 93, 030302(R)] Published Wed Mar 23, 2016

]]>Algebraic connectivity, the second eigenvalue of the Laplacian matrix, is a measure of node and link connectivity on networks. When studying interconnected networks it is useful to consider a multiplex model, where the component networks operate together with interlayer links among them. In order to…

[Phys. Rev. E 93, 030301(R)] Published Mon Mar 21, 2016

]]>Smoluchowski's coagulation kinetics is here shown to fail when the coalescing species are dilute and transported by a turbulent flow. The intermittent Lagrangian motion involves correlated violent events that lead to an unexpected rapid occurrence of the largest particles. This new phenomena is here…

[Phys. Rev. E 93, 031102(R)] Published Mon Mar 21, 2016

]]>We demonstrate that a compact manometer experiment allows direct observation of a delay to the classical electric-field-induced Freedericksz transition produced by flow in a highly dispersive nematic liquid crystal layer. The Ericksen-Leslie equations are used to show that a flow aligning torque gen…

[Phys. Rev. E 93, 030701(R)] Published Tue Mar 15, 2016

]]>A two-dimensional dense fluid of frictional grains is shown to exhibit time-chaotic, spatially heterogeneous flow in a range of stress values, $\sigma $, chosen in the unstable region of $\mathsf{s}$-shaped flow curves. Stress-controlled simulations reveal a phase diagram with reentrant stationary flow for small and l…

[Phys. Rev. E 93, 030901(R)] Published Mon Mar 14, 2016

]]>A new approach to turbulence closure is presented that eliminates the need to specify a predefined turbulence model and instead provides for fully adaptive, self-optimizing, autonomic closures. The closure is autonomic in the sense that the simulation itself determines the optimal local, instantaneo…

[Phys. Rev. E 93, 031301(R)] Published Mon Mar 14, 2016

]]>We examine fluid flow through cross-slot devices with various depth to width ratios $\alpha $. At low Reynolds number, Re, flow is symmetric and a sharp boundary exists between the two incoming fluid streams. Above an $\alpha $-dependent critical value, $R{e}_{c}\left(\alpha \right)$, a steady symmetry-breaking bifurcation occurs and a sp…

[Phys. Rev. E 93, 031101(R)] Published Wed Mar 09, 2016

]]>We study a two-dimensional binary mixture of patchy colloids in sedimentation-diffusion equilibrium using Monte Carlo simulation and Wertheim's theory. By tuning the buoyant masses of the colloids we can control the gravity-induced sequence of fluid stacks of differing density and percolation proper…

[Phys. Rev. E 93, 030601(R)] Published Tue Mar 01, 2016

]]>We report that many exact invariant solutions of the Navier-Stokes equations for both pipe and channel flows are well represented by just a few modes of the model of McKeon and Sharma [J. Fluid Mech. **658**, 336 (2010)]. This model provides modes that act as a basis to decompose the velocity field, ord…

[Phys. Rev. E 93, 021102(R)] Published Fri Feb 19, 2016

]]>We study a universal structure of two- and three-dimensional self-gravitating systems in the quasiequilibrium state. It is shown numerically that the two-dimensional self-gravitating system in the quasiequilibrium state has the same kind of density profile as the three-dimensional one, especially wh…

[Phys. Rev. E 93, 020103(R)] Published Tue Feb 16, 2016

]]>The recently discovered chimera state involves the coexistence of synchronized and desynchronized states for a group of identical oscillators. In this work, we show the existence of (inwardly) rotating spiral wave chimeras in the three-component reaction-diffusion systems where each element is *local…*

[Phys. Rev. E 93, 020202(R)] Published Tue Feb 16, 2016

]]>Thunderclouds can produce bremsstrahlung gamma-ray emission, and sometimes even positrons. At 00:27:00 (UT) on 13 January 2012, an intense burst of gamma rays from a thundercloud was detected by the GROWTH experiment, located in Japan, facing the Sea of Japan. The event started with a sharp gamma-ra…

[Phys. Rev. E 93, 021201(R)] Published Tue Feb 16, 2016

]]>We consider the effect of global repulsive coupling on an ensemble of identical excitable elements. An increase of the coupling strength destabilizes the synchronous equilibrium and replaces it with many attracting oscillatory states, created in the transcritical heteroclinic bifurcation. The period…

[Phys. Rev. E 93, 020201(R)] Published Wed Feb 10, 2016

]]>We investigate nonequilibrium fluctuations of a solid surface governed by the stochastic Mullins-Herring equation with conserved noise. This equation describes surface diffusion of adatoms accompanied by their exchange between the surface and the bulk of the solid, when desorption of adatoms is negl…

[Phys. Rev. E 93, 020102(R)] Published Mon Feb 08, 2016

]]>Granular self-assembly of confined non-Brownian spheres under gravity is studied by molecular dynamics simulations. Starting from a disordered phase, dry or cohesive spheres organize, by vibrational annealing, into body-centered-tetragonal or face-centered-cubic structures, respectively. During the …

[Phys. Rev. E 93, 020902(R)] Published Mon Feb 08, 2016

]]>We experimentally demonstrate self-excited oscillation and shedding of millimeter-sized water drops, acoustically levitated in a single-node standing waves cavity, by decreasing the steady acoustic wave intensity below a threshold. The perturbation of the acoustic field by drop motion is a possible …

[Phys. Rev. E 93, 021101(R)] Published Fri Feb 05, 2016

]]>The behaviors of large, dynamic assemblies of macroscopic particles are of direct relevance to geophysical and industrial processes and may also be used as easily studied analogs to micro- or nano-scale systems, or model systems for microbiological, zoological, and even anthropological phenomena. We…

[Phys. Rev. E 93, 020901(R)] Published Thu Feb 04, 2016

]]>The pretransitional behavior of dodecylcyanobiphenyl (12CB) (isotropic–smectic-$A$–solid mesomorphism) with $d=50\phantom{\rule{0.16em}{0ex}}\mathrm{nm}\mathrm{BaTi}{\mathrm{O}}_{3}$ nanoparticles (NPs) linked to the cubic phase was monitored via temperature studies of dielectric constant. Tests were carried out in the isotropic, liquid crystal mesomorphic, and …

[Phys. Rev. E 93, 020701(R)] Published Tue Feb 02, 2016

]]>We derive the single integrodifferential wave equation for the probability density function of the position of a classical one-dimensional Lévy walk with continuous sample paths. This equation involves a classical wave operator together with memory integrals describing the spatiotemporal coupling of…

[Phys. Rev. E 93, 020101(R)] Published Mon Feb 01, 2016

]]>We propose a generic model of driven DNA under the influence of an oscillatory force of amplitude $F$ and frequency $\nu $ and show the existence of a dynamical transition for a chain of finite length. We find that the area of the hysteresis loop, ${A}_{\mathrm{loop}}$, scales with the same exponents as observed in a rece…

[Phys. Rev. E 93, 010402(R)] Published Fri Jan 29, 2016

]]>We propose a theoretical framework within which a robust micromechanical definition of precursors to plastic instabilities, often termed soft spots, naturally emerges. They are shown to be collective displacements (modes) $\widehat{z}$ that correspond to local minima of a barrier function $b\left(\widehat{z}\right)$, which depends …

[Phys. Rev. E 93, 011001(R)] Published Thu Jan 28, 2016

]]>Because of the coupling between local lipid composition and the thickness of the membrane, microphase separation in two-component lipid membranes can take place; such effects may underlie the formation of equilibrium nanoscale rafts. Using a kinetic description, this phenomenon is analytically and n…

[Phys. Rev. E 93, 010401(R)] Published Mon Jan 25, 2016

]]>A symmetry-based theory is developed for the description of (streamwise) kinetic energy $K$ in turbulent pipes at extremely high Reynolds numbers (Re's). The theory assumes a mesolayer with continual deformation of wall-attached eddies which introduce an anomalous dissipation, breaking the exact balan…

[Phys. Rev. E 93, 011102(R)] Published Mon Jan 25, 2016

]]>We study the self-averaging properties and ergodicity of the mean square displacement $m\left(t\right)$ of particles diffusing in $d$ dimensional quenched random environments which give rise to subdiffusive average motion. These properties are investigated in terms of the sample to sample fluctuations as measured …

[Phys. Rev. E 93, 010101(R)] Published Tue Jan 19, 2016

]]>The long wavelength limit of a recent microscopic phase-field crystal (PFC) theory of a binary alloy mixture is used to derive an analytical approximation for the segregation coefficient as a function of the interface velocity, and relate it to the two-point correlation function of the liquid and th…

[Phys. Rev. E 93, 010801(R)] Published Wed Jan 13, 2016

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