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Dynamical scaling is an asymptotic property typical for the dynamics of first-order phase transitions in physical systems and related to self-similarity. Based on the integral-representation for the marginal probabilities of a fractional…

概率论 · 数学 2021-07-23 Markus Kreer

The phase transition calculations are utilized for an in-depth understanding of the thermodynamics of the deconfinement transition to perform the best analysis of the QCD phase diagram. The phenomenological justifications for a mathematical…

核理论 · 物理学 2023-03-07 Mahboubeh Shahrbaf

A time-fractional Allen-Cahn equation with volume constraint is first proposed by introducing a nonlocal time-dependent Lagrange multiplier. Adaptive linear second-order energy stable schemes are developed for the proposed model by…

数值分析 · 数学 2020-12-23 Bingquan Ji , Hong-lin Liao , Yuezheng Gong , Luming Zhang

Quantum Chromodynamics (QCD) is expected to have a first order phase transition between the confined hadron gas and the deconfined quark gluon plasma at high baryon densities. This will result in phase boundary effects in the metastable and…

高能物理 - 唯象学 · 物理学 2024-11-11 Joseph I. Kapusta , Mayank Singh , Thomas Welle

We construct and analyze a strongly consistent second-order finite difference scheme for the steady two-dimensional Stokes flow. The pressure Poisson equation is explicitly incorporated into the scheme. Our approach suggested by the first…

数值分析 · 数学 2018-09-05 Yury A. Blinkov , Vladimir P. Gerdt , Dmitry A. Lyakhov , Dominik L. Michels

We present numerical results on bubble profiles, nucleation rates and time evolution for a weakly first-order quark-hadron phase transition in different expansion scenarios. We confirm the standard picture of a cosmological first-order…

高能物理 - 唯象学 · 物理学 2009-11-13 B. W. Mintz , A. Bessa , E. S. Fraga

In this work, high order asymptotic preserving schemes are constructed and analysed for kinetic equations under a diffusive scaling. The framework enables to consider different cases: the diffusion equation, the advection-diffusion equation…

数值分析 · 数学 2023-05-24 Megala Anandan , Benjamin Boutin , Nicolas Crouseilles

We propose a new criterion to analyse the order of phase transitions within a finite size scaling analysis. It refers to response functions like order parameter susceptibilities and the specific heat and states different monotony behaviour…

高能物理 - 格点 · 物理学 2015-06-25 H. Meyer-Ortmanns , T. Reisz

We investigate the influence of a deconfinement phase transition on the dynamics of hot and dense nuclear matter. We apply a hybrid model where an intermediate hydrodynamics stage is employed for the the hot and dense stage of a system…

高能物理 - 唯象学 · 物理学 2014-11-20 J. Steinheimer , V. Dexheimer , H. Petersen , M. Bleicher , S. Schramm , H. Stoecker

Heavy-ion collisions performed in the beam energy range accessible by the NICA collider facility are expected to produce systems of extreme net-baryon densities and can thus reach yet unexplored regions of the QCD phase diagram. Here, one…

核理论 · 物理学 2016-09-21 Marlene Nahrgang , Christoph Herold

We introduce a finite-volume numerical scheme for solving stochastic gradient-flow equations. Such equations are of crucial importance within the framework of fluctuating hydrodynamics and dynamic density functional theory. Our proposed…

We study the viscosity corrections to the growth rate of nucleating bubbles in a first order phase transition in scalar field theory. We obtain the non-equilibrium equation of motion of the coordinate that describes small departures from…

高能物理 - 唯象学 · 物理学 2016-08-25 S. M. Alamoudi , D. G. Barci , D. Boyanovsky , C. A. A. de Carvalho , E. S. Fraga , S. E. Joras , F. I. Takakura

We consider a system of $N$ non-crossing Brownian particles in one dimension. We find the exact rate function that describes the long-time large deviation statistics of their occupation fraction in a finite interval in space. Remarkably, we…

统计力学 · 物理学 2023-06-28 Soheli Mukherjee , Naftali R. Smith

The deconfinement transition region between hadronic matter and quark-gluon plasma is studied for finite volumes. Assuming simple model equations of state and a first order phase transition, we find that fluctuations in finite volumes…

高能物理 - 唯象学 · 物理学 2008-11-26 C. Spieles , H. Stoecker , C. Greiner

We investigate the scenario of homogeneous nucleation for a first order quark-hadron phase transition in a rapidly expanding background of quark gluon plasma. Using an improved preexponential factor for homogeneous nucleation rate, we solve…

高能物理 - 唯象学 · 物理学 2008-11-26 P. Shukla , A. K. Mohanty

The topological approach to baryon-antibaryon production in the chiral phase transition is numerically simulated for rapidly expanding hadronic systems. For that purpose the dynamics of the effective chiral field is implemented on a space -…

高能物理 - 唯象学 · 物理学 2009-11-10 G. Holzwarth

We propose a variational finite volume scheme to approximate the solutions to Wasserstein gradient flows. The time discretization is based on an implicit linearization of the Wasserstein distance expressed thanks to Benamou-Brenier formula,…

数值分析 · 数学 2019-07-22 Clément Cancès , Thomas O. Gallouët , Gabriele Todeschi

Langevin dynamical simulations are performed to study the depinning dynamics of two-dimensional dusty plasmas on a one-dimensional periodic substrate. From the diagnostics of the sixfold coordinated particles $P_6$ and the collective drift…

等离子体物理 · 物理学 2024-04-23 L. Gu , W. Li , C. Reichhardt , C. J. O. Reichhardt , M. S. Murillo , Yan Feng

Fractional-order dynamical systems were recently introduced in the field of pharmacokinetics where they proved powerful tools for modeling the absorption, disposition, distribution and excretion of drugs which are liable to anomalous…

We present a detailed account of a first-order localization transition in the Discrete Nonlinear Schr\"odinger Equation, where the localized phase is associated to the high energy region in parameter space. We show that, due to ensemble…

统计力学 · 物理学 2021-02-08 Giacomo Gradenigo , Stefano Iubini , Roberto Livi , Satya N. Majumdar