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Rayleigh-B\'enard convection in the turbulent regime is studied using statistical methods. Exact evolution equations for the probability density function of temperature and velocity are derived from first principles within the framework of…

流体动力学 · 物理学 2011-03-04 J. Lülff , M. Wilczek , R. Friedrich

In this paper we address the problem of consistently construct Langevin equations to describe fluctuations in non-linear systems. Detailed balance severely restricts the choice of the random force, but we prove that this property together…

凝聚态物理 · 物理学 2007-05-23 J. Bonet Avalos , I. Pagonabarraga

Wet active matter in the presence of an imposed temperature gradient, or chemical potential gradient, is considered. It is shown that there is a new type of convective instability that is caused by a (negative) activity parameter.…

软凝聚态物质 · 物理学 2019-02-15 T. R. Kirkpatrick , J. K. Bhattacherjee

Relativistic dissipative hydrodynamic model at finite density is a promising tool for analyzing the dense QCD matter created in the beam energy scan experiments. The hydrodynamic frame can be chosen in the direction of energy flow, which is…

核理论 · 物理学 2021-10-13 Akihiko Monnai

The correlation theory of the thermal hydrodynamic fluctuations of liquids with internal spin within a spherical cavity is developed. For the hydrodynamic fields of such a liquid, linearized equations with random thermal sources are used.…

软凝聚态物质 · 物理学 2007-05-23 T. Yu. Tchesskaya , V. Lisy , A. V. Zatovsky

We investigate the convective cooling of a fluid with a quadratic equation of state by performing three-dimensional direct numerical simulations of a flow with a fixed top-boundary temperature, which is lower than the initial fluid…

流体动力学 · 物理学 2021-07-01 Jason Olsthoorn , Edmund W. Tedford , Gregory A. Lawrence

We derive causal relativistic fluid dynamical equations from the relaxation model of kinetic theory as in a procedure previously applied in the case of non-relativistic rarefied gases. By treating space and time on an equal footing and…

广义相对论与量子宇宙学 · 物理学 2011-08-03 Xinzhong Chen , Edward A Spiegel

We apply algorithms based on Lieb-Robinson bounds to simulate time-dependent and thermal quantities in quantum systems. For time-dependent systems, we modify a previous mapping to quantum circuits to significantly reduce the computer…

量子物理 · 物理学 2009-11-13 M. B. Hastings

We show how to reformulate Variable Speed of Light Theories (VSLT) in a covariant fashion as Variable Light-Cone Theories (VLCT) by introducing two vierbein bundles each associated with a distinct metric. The basic gravitational action…

广义相对论与量子宇宙学 · 物理学 2016-08-31 I. T. Drummond

A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only…

经典物理 · 物理学 2009-11-10 Neil Budko

We compute the shear and bulk viscosities, as well as the thermal conductivity of an ultrarelativistic fluid obeying the relativistic Boltzmann equation in 2+1 space-time dimensions. The relativistic Boltzmann equation is taken in the…

统计力学 · 物理学 2015-06-12 M. Mendoza , I. Karlin , S. Succi , H. J. Herrmann

Fluctuation Theorems are statements about the entropy of systems far from thermal equilibrium. In this Letter relativistic Fluctuation Theorems for Brownian motion are presented and proven. Though there is a known discretization dilemma…

统计力学 · 物理学 2007-05-23 Axel Fingerle

Light-cone quantization of (3+1)-dimensional electrodynamics is discussed, using discretization as an infrared regulator and paying careful attention to the interplay between gauge choice and boundary conditions. In the zero longitudinal…

高能物理 - 理论 · 物理学 2007-05-23 David G. Robertson

This paper revisits the problem of heat conduction in relativistic fluids, associated with issues concerning both stability and causality. It has long been known that the problem requires information involving second order deviations from…

广义相对论与量子宇宙学 · 物理学 2015-05-28 N. Andersson , C. Lopez-Monsalvo

The geometry of a light wavefront, evolving from a initial flat wavefront in the 3-space associated with a post-Newtonian relativistic spacetime, is studied numerically by means of the ray tracing method. For a discretization of the…

广义相对论与量子宇宙学 · 物理学 2014-11-20 A. San Miguel , F. Vicente , J. -F. Pascual-Sanchez

We investigate Rayleigh scattering in dissipative optical lattices. In particular, following recent proposals (S. Guibal {\it et al}, Phys. Rev. Lett. {\bf 78}, 4709 (1997); C. Jurczak {\it et al}, Phys. Rev. Lett. {\bf 77}, 1727 (1996)),…

In turbulent Rayleigh-B\'enard convection one seeks the relationship between the heat transport, captured by the Nusselt number, and the temperature drop across the convecting layer, captured by Rayleigh number. In experiments, one measures…

混沌动力学 · 物理学 2018-05-23 Scott Weady , Sahil Agarwal , Larry Wilen , John Wettlaufer

We have determined both the real and imaginary parts of the dielectric polarizability of a single quantum dot. The experiment is based on the observation and the manipulation of Rayleigh scattering at photon frequencies near the resonance…

介观与纳米尺度物理 · 物理学 2007-12-03 B. Alén , A. Högele , M. Kroner , S. Seidl , K. Karrai , R. J. Warburton , A. Badolato , G. Medeiros-Ribeiro , P. M. Petroff

The second-order nonlinear responses of inviscid chiral fluids near local equilibrium are investigated by applying the chiral kinetic theory (CKT) incorporating side-jump effects. It is shown that the local equilibrium distribution function…

高能物理 - 理论 · 物理学 2019-04-09 Yoshimasa Hidaka , Shi Pu , Di-Lun Yang

The causal spacetimes admitting a covariantly constant null vector provide a connection between relativistic and non-relativistic physics. We explore this relationship in several directions. We start proving a formula which relates the…

广义相对论与量子宇宙学 · 物理学 2012-11-13 E. Minguzzi