http://pre.aps.org/ Accepted Papers for Physical Review E en-us Copyright (c) 2009 The American Physical Society 2009-07-03T20:05:05-04:00 assocpub@aps.org rss@aps.org hourly 4 2009-07-03T20:05:05-04:00 rss@aps.org http://pre.aps.org/accepted/L/eb075YfdQff1b125304059903bf72f46ca2a5dc65 We present a history-dependent Monte Carlo scheme for the efficient calculation of the free-energy of quantum systems, inspired by Wang-Landau and metadynamics. In the two-dimensional quantum Ising model, chosen here for illustration, the accuracy of free energy, critical temperature, and specific h... Yanier Crespo, Alessandro Laio, Giuseppe E. Santoro and Erio Tosatti 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Computational physics Computational physics http://pre.aps.org/accepted/L/bc070Ya2Lb01f210871c0be1ec625461f1a34702b In this paper we consider the anharmonic corrections to the anisotropic elastic rod model for DNA. Our model accounts for the difference between the bending energies of positive and negative rolls, which comes from the asymmetric structure of the DNA molecule. We will show that the model can explain... B. Eslami Mossallam and M. R. Ejtehadi 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Biological physics Biological physics http://pre.aps.org/accepted/E/7407bRb1O2dWb91970893b653a3b107060f81839e It is shown that magnetic fields can be generated in a warm plasma by the non-stationary ponderomotive force of a large amplitude electromagnetic wave. In the present paper, we derive simple and explicit results that can be useful for understanding the origin of the magnetic fields that are produced... Nitin Shukla, P. K. Shukla and L. Stenflo 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Plasma physics Plasma physics http://pre.aps.org/accepted/E/c1075RdeP4fE251ac04659519b19fee878bf661f7 We present an analysis of data stemming from numerical simulations of decaying magnetohydrodynamic (MHD) turbulence up to grid resolution of 15363 points and up to Taylor Reynolds number of ~ 1200. The initial conditions are such that the initial velocity and magnetic fields are helical and in equip... P. D. Mininni and A. Pouquet 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Plasma physics Plasma physics http://pre.aps.org/accepted/E/32070RddQ7618601a6305b5023c3b2ffca3ad4dd1 Magnetic micro-particles suspended on the surface of liquid and energized by vertical alternating magnetic field exhibit complex collective behavior. Various immobile and self-propelled self-assembled structures have been observed. Here we report on experimental studies of mixing and surface diffusi... M. Belkin, A. Snezhko, I. S. Aranson and W. K. Kwok 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Granular materials Granular materials http://pre.aps.org/accepted/E/72072Rd0L4cE7117a08c3f534388f3170e2f407ef It is desirable to achieve the self-organization of a microcolumn between electrodes in a flow channel because the microcolumn can be used as a biosensor with high sensitivity. A direct simulation of a dispersed system of metallic particles in water is performed to show that a microcolumn between el... Hideyuki Sugioka 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/L/6407bYbaP7c16627b4a39b64a7e7338ed205a2d72 Current fluctuations and related steady state fluctuation relation are investigated in simple coarse-grained lattice-gas analogs of a non-Newtonian fluid driven by a constant and uniform force field, in two regimes of small entropy production. Non-Gaussian current fluctuations and deviations from fl... Mauro Sellitto 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Statistical physics Statistical physics http://pre.aps.org/accepted/E/ac070R32Q7e11a0c56fc8ad9c45447fbc62e9e591 We revise the problem of thermally activated crossing of a fluctuating potential barrier, laying stress on the asymmetry of the barrier. Considering as a working model a paradigmatic triangular dichotomously varying potential landscape we find an untypical dependence of the mean first-passage time o... A. Wozinski and J. Iwaniszewski 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Statistical physics Statistical physics http://pre.aps.org/accepted/E/ff07eRf9Fc5W4411509644a59359188844dc2cd02 We provide an observation suggesting a strong correlation between helicity and enstrophy in fluid turbulence. Helicity statistics were obtained in a direct numerical simulation of forced isotropic turbulence. An investigation of coherent structures revealed that intermittently large local helicity w... Yeontaek Choi, ByungGu Kim and Changhoon Lee 2009-07-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/E/ec07fRc4N4a1fc03243894f091dc130c0bc369b46 n this paper, the measurement of heat transfer coefficient in rarefied gases is presented; these are among the first heat transfer measurements in the slip flow regime. The experimental setup is validated by comparing friction factor in the slip regime and heat transfer coefficient in the continuum ... Anwar Demsis, Bhaskar Verma, S. V. Prabhu and Amit Agrawal 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/L/7207bY7aRa814c2fd12659118afb8a2a8d2e68a3a Numerical simulation of rotating convection in plane layers with free slip boundaries show that the convective flows can be classified according to a quantity constructed from the Reynolds, Prandtl and Ekman numbers. Three different flow regimes appear: Laminar flow close to the onset of convection,... S. Schmitz and A. Tilgner 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/E/2e072R0eM6e1850764d82c72024ccb54401d9bec9 We investigate three-dimensional magnetohydrodynamics turbulence in the presence of velocity and magnetic shear (i.e. with both a large-scale shear flow and a non-uniform magnetic field). By assuming a turbulence driven by an external forcing with both helical and non-helical spectra, we investigate... Nicolas Leprovost and Eunjin Kim 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/E/18074R1cQ6eWe21060295c815307549cd6eb70b78 We study numerically a Ginzburg-Landau type equation for micelles in two dimensions. The domain size and the interface length of a cellular structure are controlled by two feedback terms. The deformation and the successive splitting of the cellular structure are observed when the controlled interfac... Hidetsugu Sakaguchi 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Chaos and pattern formation Chaos and pattern formation http://pre.aps.org/accepted/L/ea078Y88Pf51a52ed4919d505f3527d24ce1736e3 Pattern formation in a miscible ferrofluid system is experimentally investigated. The experiment is performed by immersing a thin ferrofluid droplet in a cylindrical container, overfilling it with a nonmagnetic miscible fluid, and applying an in-plane radial magnetic field. Visually striking pattern... ChingYao Chen, Y. S. Yang and Jose A. Miranda 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/E/9007aRadN6aE161820134918f9ffb69af9c28f9fd The phenomenon of coherence resonance (CR) is investigated in an unijunction transistor relaxation oscillator (UJT-RO) and quantified by estimating the normal variance (NV). Depending upon the measuring points two types of NV curves have been obtained. We have observed that the degradations in coher... Md. Nurujjaman, P. S. Bhattacharya, A. N.Sekar Iyengar and Sandip Sarkar 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Chaos and pattern formation Chaos and pattern formation http://pre.aps.org/accepted/E/24074Rd2R7112d00852d840950a34bb512b1ffd8e From dumbbells to FCC crystals, we study the self-assembly pathway of amphiphatic, spherical colloidal particles as a function of the size of the hydrophobic region using molecular dynamics simulations. Specifically, we analyze how local inter-particle interactions correlate to the final self-assemb... William L. Miller and Angelo Cacciuto 2009-07-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Colloidal dispersions, suspensions, and aggregates Colloidal dispersions, suspensions, and aggregates http://pre.aps.org/accepted/E/91074R0dPfa14702178e8c34b574228b8a6e182d7 Small organisms (e.g., bacteria) and artificial microswimmers move due to a combination of active swimming and passive Brownian motion. Considering a simplified linear three-sphere swimmer, we study how the swimmer size regulates the interplay between self-driven and diffusive behavior at low Reynol... Jorn Dunkel and Irwin M. Zaid 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Biological physics Biological physics http://pre.aps.org/accepted/L/82076Y2eM121e41c58dc61207e170280d621632b6 We experimentally observed synchronized calling behavior of male Japanese tree frogs Hyla japonica: namely, while isolated single frogs called nearly periodically, a pair of interacting frogs called synchronously almost in anti-phase or in-phase. In this study, we propose two types of phase-oscillat... Ikkyu Aihara 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Biological physics Biological physics http://pre.aps.org/accepted/E/3e07cRb0O351d20d565124b69799e1cc396915249 The origin of stochastic fluctuations in gene expression has received considerable attention recently. Fluctuations in gene expression are particularly pronounced in cellular systems because of the small copy number of species undergoing transitions between discrete chemical states and the small siz... P. S. Gutierrez, D. Monteoliva and L. Diambra 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Biological physics Biological physics http://pre.aps.org/accepted/E/e507eRabQa814002e5d78e40a05a0b3fe3ab0f48a Simultaneous measurements of rheological and dielectric properties are made to investigate shear-induced structural change in the smectic A phase of 8CB (4-n-octyl-4'-cyanobiphenyl). With increasing the shear rate, the fluidity changes from non-Newtonian to Newtonian flow via an unstable flow region... K. Negita and H. Kaneko 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Liquid crystals Liquid crystals http://pre.aps.org/accepted/E/95070R52Pa4E4b1450045b03c10726308be16f2c6 Stochastic disturbances and spikes (sudden sharp fluctuations of any system parameter), commonly observed among natural and laboratory-scale systems, can perturb the multistable dynamics significantly and become a serious impediment when the device is designed for a certain dynamical behaviour. We e... B. K. Goswami, S. Euzzor, K. Al Naimee, A. Geltrude, R. Meucci and F. T. Arecchi 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Chaos and pattern formation Chaos and pattern formation http://pre.aps.org/accepted/E/3f071R8eQ41W011b909e4356527dd9450e2974e3a Aerodynamic performance due to forewing and hindwing interaction in gliding dragonfly flight has been studied using a multi-block lattice Boltzmann method. We find that the interactions between forewing and hindwing effectively enhance the total lift force and reduce the drag force on the wings comp... Jie Zhang and XiY Luun 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Fluid dynamics Fluid dynamics http://pre.aps.org/accepted/E/8f074Rc5Q381d202740799f051962f95fc8338479 We investigate directed thermal heat flux across 1D homogenous nonlinear lattices when no net thermal bias is present on average. A nonlinear lattice of Fermi-Pasta-Ulam-type or Lennard-Jones-type system is connected at both ends to thermal baths which are held at the same temperature on temporal av... Nia Linbei, Fei Zhan, Peter Hanggi and Bao Liwen 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Statistical physics Statistical physics http://pre.aps.org/accepted/E/9207bRbcRd117109c56371a8b314ccf1837e3591f We consider the classical and quantum properties of the "Chirikov typical map", proposed by Boris Chirikov in 1969. This map is obtained from the well known Chirikov standard map by introducing a finite number T of random phase shift angles. These angles induce a random behavior for small time scale... Klaus M. Frahm and Dima L. Shepelyansky 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Chaos and pattern formation Chaos and pattern formation http://pre.aps.org/accepted/E/4e078R5dO7815708a5537243f8cf6017847259097 An improved model for the soliton-potential scattering is presented. This model is constructed with a better approximation for adding the potential to the lagrangian through the metric of background space-time. The results of the model are compared with other models and the differences are discussed... Ensieh Hakimi and Kurosh Javidan 2009-06-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited article Physical Review E Classical Physics Classical Physics