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相关论文: Temperature dependent transport coefficients in a …

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We present calculations for the shear viscosity of the hot and dense quark-gluon plasma (QGP) using the partonic scattering cross sections as a function of temperature $T$ and baryon chemical potential $\mu_B$ from the dynamical…

核理论 · 物理学 2021-01-20 O. Soloveva , P. Moreau , L. Oliva , T. Song , W. Cassing , E. Bratkovskaya

We present here a simple qualitative model that interpolates between the high and low temperature properties of quasi-1D conductors. At high temperatures we argue that transport is governed by inelastic scattering whereas at low…

无序系统与神经网络 · 物理学 2009-10-30 Ivar Martin , Philip Phillips

We estimate bulk and shear viscosity at finite temperature and baryon densities of hadronic matter within hadron resonance gas model. For bulk viscosity we use low energy theorems of QCD for the energy momentum tensor correlators. For shear…

高能物理 - 唯象学 · 物理学 2015-05-20 Guru Prakash Kadam , Hiranmaya Mishra

We numerically and theoretically investigate the Boussinesq Eady model, where a rapidly rotating density-stratified layer of fluid is subject to a meridional temperature gradient in thermal wind balance with a uniform vertically sheared…

We use a novel formulation of the relaxation time approximation to consistently calculate the bulk and shear viscosity coefficients using QCD-inspired energy-dependent relaxation times and phenomenological thermal masses obtained from fits…

We investigate the effects of a temperature-dependent shear viscosity over entropy density ratio eta/s on the flow anisotropy coefficients v_2 and v_4 in ultrarelativistic heavy-ion collisions at RHIC and LHC. We find that v_4 is more…

核理论 · 物理学 2012-04-16 Harri Niemi , Gabriel S. Denicol , Pasi Huovinen , Etele Molnar , Dirk H. Rischke

The transport coefficients are known as the measure of system interactions, as well as the dynamical input of the hydrodynamic evolution equations of an expanding system created in the relativistic heavy ion collisions. In the current…

核理论 · 物理学 2025-08-25 Sukanya Mitra

For hopping transport in disordered materials, the mobility of charge carriers is strongly dependent on temperature and the electric field. Our numerical study shows that both the energy distribution and the mobility of charge carriers in…

无序系统与神经网络 · 物理学 2016-10-26 F. Jansson , S. D. Baranovskii , F. Gebhard , R. Österbacka

Consistent descriptions of the equation of states, and information about transport coefficients of deuterium-tritium mixture are demonstrated through quantum molecular dynamic (QMD) simulations (up to a density of 600 g/cm$^{3}$ and a…

材料科学 · 物理学 2015-06-04 Cong Wang , Yao Long , Xian-Tu He , Ping Zhang

The effect of particle overtaking on transport in a narrow channel is studied using a 1d model of a driven tracer in a quiescent bath. In contrast with the well-studied non-driven case, where the tracer's long-time dynamics changes from…

统计力学 · 物理学 2020-06-30 Asaf Miron , David Mukamel , Harald A. Posch

We study the interaction of leading jet partons in a strongly interacting quark-gluon plasma (sQGP) medium based on the effective dynamical quasi-particle model (DQPM). The DQPM describes the non-perturbative nature of the sQGP at finite…

We present the first calculation of the jet transport coefficient $\hat{q}$ in quenched and (2+1)-flavor QCD on a 4-D Euclidean lattice. The light-like propagation of an energetic parton is factorized from the mean square gain in momentum…

高能物理 - 格点 · 物理学 2025-02-25 Amit Kumar , Abhijit Majumder , Johannes Heinrich Weber

A theoretical framework for the calculation of shear and bulk viscosities of hadronic matter at finite temperature is presented. The framework is based on the quasi-particle picture. It allows for an arbitrary number of hadron species with…

核理论 · 物理学 2011-02-01 P. Chakraborty , J. I. Kapusta

We present recent results on the calculation of transport coefficients for a pion gas at zero chemical potential in Chiral Perturbation Theory using Linear Response Theory. More precisely, we show the behavior of DC conductivity and shear…

高能物理 - 唯象学 · 物理学 2008-11-26 D. Fernandez-Fraile , A. Gomez Nicola

We calculate the holographic entanglement entropy for the holographic QCD phase diagram considered in [Knaute, Yaresko, K\"ampfer (2017), arXiv:1702.06731] and explore the resulting qualitative behavior over the temperature-chemical…

高能物理 - 唯象学 · 物理学 2017-11-08 J. Knaute , B. Kämpfer

The shear ($\eta$) and bulk ($\zeta$) viscosities are calculated in a quasiparticle relaxation time approximation. The hadron phase is described within the relativistic mean field based model with scaled hadron masses and couplings. The…

核理论 · 物理学 2010-10-19 A. S. Khvorostukhin , V. D. Toneev , D. N. Voskresensky

Tsallis nonextensive statistics is applied to study the transport coefficients of strongly interacting matter within the Polyakov chiral SU(3) quark mean field model (PCQMF). Nonextensivity is introduced within the PCQMF model through a…

高能物理 - 唯象学 · 物理学 2024-12-03 Dhananjay Singh , Arvind Kumar

We study the shear and bulk viscosities of partonic and hadronic matter - as well as the electric conductivity - as functions of temperature $T$ within the Parton-Hadron-String Dynamics (PHSD) off-shell transport approach. Dynamical…

核理论 · 物理学 2015-06-15 E. L. Bratkovskaya , V. Ozvenchuk , W. Cassing , V. P. Konchakovski , O. Linnyk

Transport coefficients are of crucial importance in theoretical as well as experimental studies. Despite substantial research on classical hard sphere/disk gases in low and high density regimes, a thorough investigation of transport…

统计力学 · 物理学 2020-08-04 Malihe Ghodrat

In heavy-ion collisions, the quark-gluon plasma is produced far from equilibrium. This regime is currently inaccessible by quantum chromodynamics (QCD) computations. We calculate shear transport and entropy far from equilibrium in a…

高能物理 - 唯象学 · 物理学 2020-12-30 Michael F. Wondrak , Matthias Kaminski , Marcus Bleicher