Physical Review E

Physical Review E

Recent articles in Physical Review E
Large-scale thermal convection in a horizontal porous layer Author(s): Denis S. Goldobin and Elizaveta V. Shklyaeva In a range of physical systems, the first instability in Rayleigh-Bérnard convection between nearly thermally insulating horizontal plates is large scale. This holds for thermal convection of fluids saturating porous media. Large-scale thermal convection in a horizontal layer is governed by remarka... [Phys. Rev. E 78, 027301] Published Tue Aug 19, 2008 Numerical method of lines for the relaxational dynamics of nematic liquid crystals Author(s): A. K. Bhattacharjee, Gautam I. Menon, and R. Adhikari We propose an efficient numerical scheme, based on the method of lines, for solving the Landau–de Gennes equations describing the relaxational dynamics of nematic liquid crystals. Our method is computationally easy to implement, balancing requirements of efficiency and accuracy. We benchmark our m... [Phys. Rev. E 78, 026707] Published Tue Aug 19, 2008 Lattice Boltzmann simulation of nonequilibrium effects in oscillatory gas flow Author(s): G. H. Tang, X. J. Gu, R. W. Barber, D. R. Emerson, and Y. H. Zhang Accurate evaluation of damping in laterally oscillating microstructures is challenging due to the complex flow behavior. In addition, device fabrication techniques and surface properties will have an important effect on the flow characteristics. Although kinetic approaches such as the direct simulat... [Phys. Rev. E 78, 026706] Published Tue Aug 19, 2008 Effect of transport of growing nanoparticles on capacitively coupled rf discharge dynamics Author(s): I. V. Schweigert, A. L. Alexandrov, D. A. Ariskin, F. M. Peeters, I. Stefanović, E. Kovačević, J. Berndt, and J. Winter We present experimental and numerical studies of the properties of a capacitively coupled 13.56MHz discharge in a mixture of Ar and C_{2} H_{2} with growing nanosize particles. It is found that at the initial stage of the growth, nanoparticles are accumulated near the sheath-plasma boundaries, where... [Phys. Rev. E 78, 026410] Published Tue Aug 19, 2008 Superdiffusion in quasi-two-dimensional Yukawa liquids Author(s): T. Ott, M. Bonitz, Z. Donkó, and P. Hartmann The emergence and vanishing of superdiffusion in quasi-two-dimensional Yukawa systems are investigated by molecular dynamics simulations. Using both the asymptotic behavior of the mean-squared displacement of the particles and the long-time tail of the velocity autocorrelation function as indicators... [Phys. Rev. E 78, 026409] Published Tue Aug 19, 2008 Shear viscosity of strongly coupled Yukawa liquids Author(s): Z. Donkó and P. Hartmann We present molecular-dynamics calculations of the shear viscosity of three-dimensional strongly coupled Yukawa liquids which are frequently used as a model system of complex plasmas. The results obtained using two independent nonequilibrium simulation methods are critically compared with each other ... [Phys. Rev. E 78, 026408] Published Tue Aug 19, 2008 Coriolis effects on fingering patterns under rotation Author(s): Enrique Alvarez-Lacalle, Hermes Gadêlha, and José A. Miranda The development of immiscible viscous fingering patterns in a rotating Hele-Shaw cell is investigated. We focus on understanding how the time evolution and the resulting morphologies are affected by the action of the Coriolis force. The problem is approached analytically and numerically by employing... [Phys. Rev. E 78, 026305] Published Tue Aug 19, 2008 Limit-cycle oscillators subject to a delayed feedback Author(s): Thomas Erneux and Johan Grasman The coexistence of two stable limit cycles exhibiting different periods is examined for a nonlinear oscillator subject to a delayed feedback. For the case of a weakly nonlinear oscillator, we discuss the validity of a previously determined phase equation. For the case of a strongly nonlinear oscilla... [Phys. Rev. E 78, 026209] Published Tue Aug 19, 2008 Selectivity-based spreading dynamics on complex networks Author(s): Rui Yang, Liang Huang, and Ying-Cheng Lai Most previous studies on spreading dynamics on complex networks are based on the assumption that a node can transmit infection to any of its neighbors with equal probability. In realistic situations, an infected node can preferentially select a targeted node and vice versa. We develop a first-order ... [Phys. Rev. E 78, 026111] Published Tue Aug 19, 2008 Phase synchronization in mutually coupled chaotic diode lasers Author(s): Y. Aviad, I. Reidler, W. Kinzel, I. Kanter, and M. Rosenbluh Semiconductor lasers with optical feedback have chaotically pulsating output behavior. When two similar chaotic lasers are optically coupled, they can become synchronized in their optical fluctuations. Here we show that the synchronization is not only in the amplitude and in the timing of the pulses... [Phys. Rev. E 78, 025204] Published Tue Aug 19, 2008 Nanostructures with long-range order in monolayer self-assembly Author(s): Feng Shi, Pradeep Sharma, Donald J. Kouri, Fazle Hussain, and Gemunu H. Gunaratne A key ingredient for continued expansion of nanotechnologies is the ability to create perfectly ordered arrays on a small scale with both site and size control. Self-assembly—i.e., the spontaneous formation of nanostructures—is a highly promising alternative to traditional fabrication methods. H... [Phys. Rev. E 78, 025203] Published Tue Aug 19, 2008 Optimum size of a molecular bond cluster in adhesion Author(s): Yuan Lin and L. B. Freund The strength of a bonded interface is considered for the case in which bonding is the result of clusters of discrete bonds distributed along the interface. Assumptions appropriate for the case of adhesion of biological cells to an extracellular matrix are introduced as a basis for the discussion. It... [Phys. Rev. E 78, 021909] Published Tue Aug 19, 2008 Isotropic-cholesteric transition of a weakly chiral elastomer cylinder Author(s): Xiangjun Xing and Aparna Baskaran When a chiral isotropic elastomer is brought to the low-temperature cholesteric phase, the nematic degree of freedom tends to order and form a helix. Due to the nematoelastic coupling, this also leads to elastic deformation of the polymer network that is locally coaxial with the nematic order. Howev... [Phys. Rev. E 78, 021709] Published Tue Aug 19, 2008 Simple three-state lattice model for liquid water Author(s): Alina Ciach, Wojciech Góźdź, and Aurélien Perera A simple three-state lattice model that incorporates two states for locally ordered and disordered forms of liquid water in addition to empty cells is introduced. The model is isomorphic to the Blume-Emery-Griffith model. The locally ordered (O) and disordered (D) forms of water are treated as two c... [Phys. Rev. E 78, 021203] Published Tue Aug 19, 2008 Finite-size scaling analysis and dynamic study of the critical behavior of a model for the collective displacement of self-driven individuals Author(s): Gabriel Baglietto and Ezequiel V. Albano The Vicsek model (VM) [T. Vicsek , Phys. Rev. Lett. 75, 1226 (1995)], for the description of the collective behavior of self-driven individuals, assumes that each of them adopts the average direction of movement of its neighbors, perturbed by an external noise. A second-order transition between a st... [Phys. Rev. E 78, 021125] Published Tue Aug 19, 2008 Statistical mechanics of lossy compression for nonmonotonic multilayer perceptrons Author(s): Florent Cousseau, Kazushi Mimura, Toshiaki Omori, and Masato Okada A lossy data compression scheme for uniformly biased Boolean messages is investigated via statistical mechanics techniques. We utilize a treelike committee machine (committee tree) and a treelike parity machine (parity tree) whose transfer functions are nonmonotonic. The scheme performance at the in... [Phys. Rev. E 78, 021124] Published Tue Aug 19, 2008 Can the imaginary part of permeability be negative? Author(s): Vadim A. Markel When new composite optical materials are developed experimentally or studied in numerical simulations, it is essential to have a set of fundamental constraints that the optical constants of such materials must satisfy. In this paper I argue that positivity of the imaginary part of the magnetic perme... [Phys. Rev. E 78, 026608] Published Mon Aug 18, 2008 Experimental investigation of interface states in photonic crystal heterostructures Author(s): Jiyong Guo, Yong Sun, Yewen Zhang, Hongqiang Li, Haitao Jiang, and Hong Chen Optical Tamm states, a kind of interface modes, are also called Tamm plasmon-polaritons. They are experimentally observed in photonic heterostructures based on microstrip transmission lines. The position of optical Tamm states can be designed exactly under effective impedance match and effective pha... [Phys. Rev. E 78, 026607] Published Mon Aug 18, 2008 Unstable recurrent patterns in Kuramoto-Sivashinsky dynamics Author(s): Yueheng Lan and Predrag Cvitanović We undertake an exploration of recurrent patterns in the antisymmetric subspace of the one-dimensional Kuramoto-Sivashinsky system. For a small but already rather “turbulent” system, the long-time dynamics takes place on a low-dimensional invariant manifold. A set of equilibria offers a coarse g... [Phys. Rev. E 78, 026208] Published Mon Aug 18, 2008 Coupling-induced resonance in two mutually and asymmetrically coupled oscillators Author(s): Thomas W. Carr We consider two mutually coupled oscillators, where we have independent control over the magnitude, sign, and delay of the coupling signal. For appropriate tuning of the coupling constants, there is a coupling-induced resonance where the amplitude becomes large. We investigate the role of nonlinear ... [Phys. Rev. E 78, 026207] Published Mon Aug 18, 2008 Using Green’s function molecular dynamics to rationalize the success of asperity models when describing the contact between self-affine surfaces Author(s): Carlos Campañá We use Green’s function molecular dynamics to evaluate the effectiveness of asperity models when describing the contact mechanics of elastic solids with self-affine surfaces. Surfaces are created with the help of a Fourier filtering algorithm, and the interactions between the solids are modeled vi... [Phys. Rev. E 78, 026110] Published Mon Aug 18, 2008 Molecular dynamics simulations of temperature equilibration in dense hydrogen Author(s): J. N. Glosli, F. R. Graziani, R. M. More, M. S. Murillo, F. H. Streitz, M. P. Surh, L. X. Benedict, S. Hau-Riege, A. B. Langdon, and R. A. London The temperature equilibration rate between electrons and protons in dense hydrogen has been calculated with molecular dynamics simulations for temperatures between 10 and 600eV and densities between 10^{20} cm^{−3} to10^{24} cm^{−3} . Careful attention has been devoted to convergence of the simu... [Phys. Rev. E 78, 025401] Published Mon Aug 18, 2008 Membrane lipid segregation in endocytosis Author(s): Sarah A. Nowak and Tom Chou We explore the equilibrium mechanics of a binary lipid membrane that wraps around a spherical or cylindrical particle. One of the lipid membrane components induces a positive spontaneous curvature, while the other induces a negative local curvature. Using a Hamiltonian approach, we derive the equati... [Phys. Rev. E 78, 021908] Published Mon Aug 18, 2008 Directed motion in a periodic potential of a quantum system coupled to a heat bath driven by a colored noise Author(s): Satyabrata Bhattacharya, Pinaki Chaudhury, Sudip Chattopadhyay, and Jyotipratim Ray Chaudhuri A system-reservoir nonlinear coupling model is proposed for a quantum system when the associated bath is not in thermal equilibrium but is modulated by an external colored noise, to present a microscopic approach to quantum state-dependent diffusion and multiplicative noise in terms of a quantum Lan... [Phys. Rev. E 78, 021123] Published Mon Aug 18, 2008 Universal cumulants of the current in diffusive systems on a ring Author(s): C. Appert-Rolland, B. Derrida, V. Lecomte, and F. van Wijland We calculate exactly the first cumulants of the integrated current and of the activity (which is the total number of changes of configurations) of the symmetric simple exclusion process on a ring with periodic boundary conditions. Our results indicate that for large system sizes the large deviation ... [Phys. Rev. E 78, 021122] Published Mon Aug 18, 2008 Higher-order statistics of a bistable system driven by dichotomous colored noise Author(s): Tilo Schwalger and Benjamin Lindner Exact expressions for first- and higher-order residence time statistics, count statistics, and spectral properties of a bistable system driven by dichotomous colored noise are put forward and discussed. The employed method is based on a discrete kinetic scheme and is valid for a wide range of parame... [Phys. Rev. E 78, 021121] Published Mon Aug 18, 2008 Nernst’s heat theorem for Casimir-Lifshitz free energy Author(s): Simen A. Ellingsen Consideration of the Lifshitz expression for the Casimir free energy on the real frequency axis rather than the imaginary Matsubara frequencies as is customary sheds light on the ongoing debate regarding the thermodynamical consistency of this theory in combination with common permittivity models. I... [Phys. Rev. E 78, 021120] Published Mon Aug 18, 2008 Friction-force model for Maxwellian drifting ions in weakly ionized plasmas Author(s): L. Conde, L. F. Ibáñez, and J. Lambás Analytical expressions for the collision frequency for momentum transfer and the friction force experienced by a Maxwellian ion population drifting with respect to the uniform neutral atom background are derived. The calculations make use of different models for the collision cross section for momen... [Phys. Rev. E 78, 026407] Published Fri Aug 15, 2008 Nonchaotic stagnant motion in a marginal quasiperiodic gradient system Author(s): Takahito Mitsui A one-dimensional dynamical system with a marginal quasiperiodic gradient is presented as a mathematical extension of a nonuniform oscillator. The system exhibits a nonchaotic stagnant motion, which is reminiscent of intermittent chaos. In fact, the density function of residence times near stagnatio... [Phys. Rev. E 78, 026206] Published Fri Aug 15, 2008 Sequential algorithm for fast clique percolation Author(s): Jussi M. Kumpula, Mikko Kivelä, Kimmo Kaski, and Jari Saramäki In complex network research clique percolation, introduced by Palla, Derényi, and Vicsek [Nature (London) 435, 814 (2005)], is a deterministic community detection method which allows for overlapping communities and is purely based on local topological properties of a network. Here we present a sequ... [Phys. Rev. E 78, 026109] Published Fri Aug 15, 2008

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