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Phase-field lattice Boltzmann modeling of boiling using a sharp-interface energy solver
10.1103/PhysRevE.96.013306 2017-07-11 The main objective of this paper is to extend an isothermal incompressible two-phase lattice Boltzmann equation method to model liquid-vapor phase change problems using a sharp-interface energy solver. Two discrete particle distribution functions, one for the... |
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Diffusion in time-dependent random media and the Kardar-Parisi-Zhang equation
10.1103/PhysRevE.96.010102 2017-07-10 Although time-dependent random media with short-range correlations lead to (possibly biased) normal tracer diffusion, anomalous fluctuations occur away from the most probable direction. This was pointed out recently in one-dimensional (1D) lattice random walk... |
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Quantifying the entropic cost of cellular growth control
10.1103/PhysRevE.96.010401 2017-07-10 Viewing the ways a living cell can organize its metabolism as the phase space of a physical system, regulation can be seen as the ability to reduce the entropy of that space by selecting specific cellular configurations that are, in some sense, optimal. Here ... |
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Interplay of different environments in open quantum systems: Breakdown of the additive approximation
10.1103/PhysRevE.96.012113 2017-07-10 We analyze an open quantum system under the influence of more than one environment: a dephasing bath and a probability-absorbing bath that represents a decay channel, as encountered in many models of quantum networks. In our case, dephasing is modeled by rand... |
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Requisite ingredients for thermal rectification
10.1103/PhysRevE.96.012114 2017-07-10 The present work is devoted to an analytical investigation of the thermal rectification mechanism. More specifically, we attempt to find the requisite ingredients for such a phenomenon to occur. Starting from the linearization of the time evolution equations ... |
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How fast does a random walk cover a torus?
10.1103/PhysRevE.96.012115 2017-07-10 We present high statistics simulation data for the average time 〈Tcover(L)〉 that a random walk needs to cover completely a two-dimensional torus of size L×L. They confirm the mathematical prediction that 〈Tcover(L)〉∼(LlnL)2 for large L, but the prefactor seem... |
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Calculating how long it takes for a diffusion process to effectively reach steady state without computing the transient solution
10.1103/PhysRevE.96.012116 2017-07-10 Mathematically, it takes an infinite amount of time for the transient solution of a diffusion equation to transition from initial to steady state. Calculating a finite transition time, defined as the time required for the transient solution to transition to w... |
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Solution to urn models of pairwise interaction with application to social, physical, and biological sciences
10.1103/PhysRevE.96.012311 2017-07-10 We investigate a family of urn models that correspond to one-dimensional random walks with quadratic transition probabilities that have highly diverse applications. Well-known instances of these two-urn models are the Ehrenfest model of molecular diffusion, t... |
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Graphene as transmissive electrodes and aligning layers for liquid-crystal-based electro-optic devices
10.1103/PhysRevE.96.012702 2017-07-10 In a conventional liquid crystal (LC) cell, polyimide layers are used to align the LC homogeneously in the cell, and transmissive indium tin oxide (ITO) electrodes are used to apply the electric field to reorient the LC along the field. It is experimentally p... |
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Contact angle entropy and macroscopic friction in noncohesive two-dimensional granular packings
10.1103/PhysRevE.96.012902 2017-07-10 We study the relationship between the granular contact angle distribution and local particle friction on the macroscopic friction and bulk modulus in noncohesive disk packings. Molecular dynamics in two dimensions are used to simulate uniaxial loading-unloadi... |