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In this paper, we derive tail approximations of integrals of exponential functions of Gaussian random fields with varying mean functions and approximations of the associated point processes. This study is motivated naturally by multiple…

统计理论 · 数学 2011-12-05 Jingchen Liu , Gongjun Xu

When we represent a network of sensors in Euclidean space by a graph, there are two distances between any two nodes that we may consider. One of them is the Euclidean distance. The other is the distance between the two nodes in the graph,…

网络与互联网体系结构 · 计算机科学 2009-06-10 Rodrigo S. C. Leao , Valmir C. Barbosa

The attractor mechanism implies that the supersymmetric black hole near horizon solution is defined only in terms of the conserved charges and is therefore independent of asymptotic moduli. Starting only with the near horizon geometry,…

高能物理 - 理论 · 物理学 2008-11-26 Oscar J. C. Dias , Pedro J. Silva

Starting from the equations of motion in a 1 + 1 static, diagonal, Lorentzian spacetime, such as the Schwarzschild radial line element, I find another metric, but with Euclidean signature, which produces the same geodesics x(t). This…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Rickard Jonsson

The Euclidian thermal Green function of the two-dimensional (2D) free massless scalar field in coordinate space is written as the real part of a complex analytic function of a variable that conformally maps the infinite strip…

高能物理 - 理论 · 物理学 2008-11-26 Leonardo Mondaini , E. C. Marino

A systematic first-principle study is performed to calculate the lattice parameters, electronic structure, and thermodynamic properties of UN using the local-density approximation (LDA)+\emph{U} and the generalized gradient approximation…

材料科学 · 物理学 2015-05-19 Yong Lu , Bao-Tian Wang , Rong-Wu Li , Hongliang Shi , Ping Zhang

Through a Euclidean path integral we establish that the density fluctuations of a Fermi fluid in one dimension are related to vicinal surfaces and to the stochastic dynamics of particles interacting through long range forces with inverse…

统计力学 · 物理学 2009-10-31 Herbert Spohn

Accurate description of finite-temperature vibrational dynamics is indispensable in the computation of two-dimensional electronic spectra. Such simulations are often based on the density matrix evolution, statistical averaging of initial…

化学物理 · 物理学 2024-09-26 Tomislav Begušić , Jiří Vaníček

A statistical field theory of particle production is presented using a gaussian functional in three dimensions. Identifying the field with the particle density fluctuation results in zero correlations of order three and higher, while the…

高能物理 - 唯象学 · 物理学 2015-06-25 H. C. Eggers , H-Th. Elze , I. Sarcevic

In the present study it is shown that the interaction of a quasi-static gravitational wave through density fluctuations gives rise to a heat conductivity coefficient and hence temperature. This fact is a very important characteristics to…

综合物理 · 物理学 2015-10-28 S. O. Gladkov , Anil Yadav , Saibal Ray , F. Rahaman

The geodesic structure and thermal properties of Gaussian Black Holes (\textbf{GBH})s in modified and Einstein gravities are studied and compared. In the geodesic part, motion of a test particle (massive and massless) are discussed,…

广义相对论与量子宇宙学 · 物理学 2026-05-14 M. Haditale , B. Malekolkalami

Effects of explicit temperature dependence in the exchange-correlation (XC) free-energy functional upon calculated properties of matter in the warm dense regime are investigated. The comparison is between the KSDT finite-temperature local…

材料科学 · 物理学 2016-06-29 Valentin V. Karasiev , Lázaro Calderín , S. B. Trickey

This work is concerned with thermal quantum states of Hamiltonians on spin and fermionic lattice systems with short range interactions. We provide results leading to a local definition of temperature, thereby extending the notion of…

量子物理 · 物理学 2014-08-04 M. Kliesch , C. Gogolin , M. J. Kastoryano , A. Riera , J. Eisert

The single-particle spectral function and the density response of a two band Emery model for CuO chains is calculated for large on-site Cu repulsion U and large on-site energy difference \Delta. For U>>U-\Delta>>t the eigenfunctions are…

强关联电子 · 物理学 2009-02-27 Karlo Penc , Walter Stephan

The Sachs-Wolfe temperature fluctuations produced by primordial density perturbations are proportional to the potential field \phi, which is a weighted integral over the density field \delta. Because of the central limit theorem, \phi can…

天体物理学 · 物理学 2011-05-12 Robert J. Scherrer , Robert K. Schaefer

The field (geometrical) theory of specific heat is based on the universal thermal sum, a new mathematical tool derived from the evolution equation in the Euclidean four-dimensional spacetime, with the closed time coordinate. This theory…

材料科学 · 物理学 2021-01-21 Yuri Vladimirovich Gusev

Surface heat flow is a key parameter for the geothermal structure, rheology, and hence the dynamics of continents. However, the coverage of heat flow measurements is still poor in many continental areas. By transforming the stable nonlinear…

地球物理 · 物理学 2017-10-12 Rong Qiang Wei

We investigate the propagation of a local perturbation in the two-dimensional transverse-field Ising model with a time-dependent application of mean-field theory based on the BBGKY hierarchy. We show that the perturbation propagates through…

量子物理 · 物理学 2017-02-07 Jonas Hafner , Benjamin Blaß , Heiko Rieger

Since the 1920s, when the three oscillations ENSO, NAO and NPO were found and defined, the theory of ocean-atmosphere coupling is particularly important in explaining the phenomena of atmospheric physics, then defined more than ten climate…

综合物理 · 物理学 2017-09-25 Jishi Zhang , Jingrong Lu , Haidong Huang , Xiaoning Liu , Yafeng Zhao , Zhiyang Wang , Jinlei Mo

We performed high-resolution numerical simulations of hydrodynamic turbulence with and without mean velocity ($U_0=0,10$), and demonstrate the sweeping effect. For $U_0=0$, the velocity correlation function, $C({\bf k},\tau)$ decays with…

流体动力学 · 物理学 2017-09-12 Mahendra K. Verma , Abhishek Kumar
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