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We present a versatile density functional approach (DFT) for calculating the depletion potential in general fluid mixtures. In contrast to brute force DFT, our approach requires only the equilibrium density profile of the small particles…

软凝聚态物质 · 物理学 2009-10-31 R. Roth , R. Evans , S. Dietrich

The investigation of gravity in higher-dimensional spacetime has transitioned from a mathematical curiosity to a fundamental framework in theoretical physics, catalyzed by the dimensional requirements of String theory and M-theory. In this…

广义相对论与量子宇宙学 · 物理学 2026-04-03 Chen-Hao Hao , Jiliang Jing , Jieci Wang

An explicit fluid flow simulation of electromagnetic wave propagation in the gravitational field of a Schwarzschild black hole is given. The fluid has a constant refractive index and a spherically symmetric inward directed flow. The…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Kjell Rosquist

We study the Dirichlet problem associated to the equation for self-similar surfaces for graphs over the Euclidean plane with a disk removed. We show the existence of a solution provided the boundary conditions on the boundary circle are…

微分几何 · 数学 2019-09-19 Xuan Hien Nguyen

Supposing the existence of modified Chaplygin gas with the equation of state $p=A\rho-B/\rho^\beta$ as a cosmic background, we obtain a static spherically-symmetric solution to the Einstein-Gauss-Bonnet gravitational equations in 5D…

广义相对论与量子宇宙学 · 物理学 2024-09-18 Xiang-Qian Li , Bo Chen , Li-Li Xing

A small deformation controlled by four free parameters to the Schwarzschild metric could be referred to a nonspinning black hole solution in alternative theories of gravity. Because such a non-Schwarzschild metric can be changed into a…

广义相对论与量子宇宙学 · 物理学 2021-12-14 Hongxing Zhang , Naying Zhou , Wenfang Liu , Xin Wu

We discuss recent developments in the hydrodynamic description of strongly coupled conformal field theories using the AdS/CFT correspondence. In particular, we review aspects of the fluid-gravity correspondence which provides a map between…

高能物理 - 理论 · 物理学 2009-11-09 Mukund Rangamani

We develop the pole-skipping structure in de Sitter (dS) spacetime and find that their leading frequencies satisfy the relation $\omega_{dS}=i2\pi T_{dS}(1-s)$, where $T_{dS}=1/2\pi L$ and $s$ denotes spin. In the two-dimensional dS…

高能物理 - 理论 · 物理学 2025-07-22 Haiming Yuan , Xian-Hui Ge , Keun-Young Kim

We continue our study in 4-dimension to derive non-charged and charged (Anti)-de Sitter black hole solutions in conformal teleparallel equivalent of general relativity. The non-charged and charged equations of motion are applied to a…

广义相对论与量子宇宙学 · 物理学 2020-03-26 G. G. L. Nashed , Kazuharu Bamba

We study the dynamics of a spherically symmetric thin shell of perfect fluid embedded in d-dimensional Anti-de Sitter space-time. In global coordinates, besides collapsing solutions, oscillating solutions are found where the shell bounces…

广义相对论与量子宇宙学 · 物理学 2015-07-07 Javier Mas , Alexandre Serantes

In this paper we study several aspects of extremal spherical symmetric black hole solutions of four dimensional N=1 supergravity coupled to vector and chiral multiplets with the scalar potential turned on. In the asymptotic region the…

高能物理 - 理论 · 物理学 2013-07-26 Bobby E. Gunara , Freddy P. Zen , Fiki T. Akbar , Agus Suroso , Arianto

Correspondences between black holes and fluids have been discussed in two different frameworks, the Fluid/Gravity correspondence and membrane paradigm. Recently, it has been discussed that these two theories can be understood as the same…

高能物理 - 理论 · 物理学 2014-02-26 Yoshinori Matsuo , Yuya Sasai

A four-dimensional black hole solution of the Einstein equations with a positive cosmological constant, coupled to a conformal scalar field, is given. There is a curvature singularity at the origin, and scalar field diverges inside the…

高能物理 - 理论 · 物理学 2009-11-07 Cristian Martinez , Ricardo Troncoso , Jorge Zanelli

We propose that the logarithmic term in the entanglement entropy computed in a conformal field theory for a $(d-2)$-dimensional round sphere in Minkowski spacetime is identical to the logarithmic term in the entanglement entropy of extreme…

高能物理 - 理论 · 物理学 2010-10-28 Sergey N. Solodukhin

Interior perfect fluid solutions for the Reissner-Nordstrom metric are studied on the basis of a new classification scheme. General formulas are found in many cases. Explicit new global solutions are given as illustrations. Known solutions…

广义相对论与量子宇宙学 · 物理学 2009-11-07 B. V. Ivanov

We revisit and improve the analytic study arXiv:1804.03462 of spherically symmetric but dynamical black holes in Einstein's gravity coupled to a real scalar field. We introduce a series expansion in a small parameter $\epsilon$ that…

广义相对论与量子宇宙学 · 物理学 2024-05-07 Aaron Beyen , Efe Hamamcı , Kasper Meerts , Dieter Van den Bleeken

We use the AdS/CFT correspondence to argue that large rotating black holes in global AdS(D) spaces are dual to stationary solutions of the relativistic Navier-Stokes equations on S**(D-2). Reading off the equation of state of this fluid…

高能物理 - 理论 · 物理学 2009-09-29 Sayantani Bhattacharyya , Subhaneil Lahiri , R. Loganayagam , Shiraz Minwalla

We construct different neutral blackfold solutions in Anti-de Sitter and de Sitter background spacetimes in the limit where the cosmological scale is taken to be much larger than the transverse horizon size. This includes a class of…

高能物理 - 理论 · 物理学 2014-12-23 Jay Armas , Niels A. Obers

We consider the most general dilaton gravity theory in 1+1 dimensions. By suitably parametrizing the metric and scalar field we find a simple expression that relates the energy of a generic solution to the magnitude of the corresponding…

广义相对论与量子宇宙学 · 物理学 2016-08-24 J. Gegenberg , G. Kunstatter , D. Louis-Martinez

Dilaton-axion gravity with $p U(1)$ vector fields is studied on space-times admitting a timelike Killing vector field. Three-dimensional sigma-model is derived in terms of K\"ahler geometry, and holomorphic representation of the SO(2,2+p)…

广义相对论与量子宇宙学 · 物理学 2014-11-17 D. V. Gal'tsov , P. S. Letelier