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Low-temperature thermodynamic properties of the spin-1/2 Heisenberg ladder system with non-magnetic impurities are discussed using an effective Hamiltonian for the impurity-induced spins in the background of a spin liquid with a gap. It is…

凝聚态物理 · 物理学 2009-10-28 M. Sigrist , A. Furusaki

In a framework for long-range density-functional theory we present a unified full-field treatment of the asymptotic van der Waals interaction for atoms, molecules, surfaces, and other objects. The only input needed consists of the electron…

凝聚态物理 · 物理学 2009-10-31 Erika Hult , Henrik Rydberg , Bengt I. Lundqvist , David C. Langreth

The transport of single-phase fluid mixtures in porous media is described by cross-diffusion equations for the mass densities. The equations are obtained in a thermodynamic consistent way from mass balance, Darcy's law, and the van der…

偏微分方程分析 · 数学 2016-12-14 Ansgar Jüngel , Jiří Mikyška , Nicola Zamponi

The electrical resistivity, thermoelectric power and electronic thermal conductivity of simple (isotropic) metals are studied in a uniform way. Starting from results of a variational solution of the Boltzmann equation, a generalized…

材料科学 · 物理学 2009-11-07 M. Ausloos , K. Durczewski , J. Ulner

We compute the thermoelectric and thermal transport in the weakly disordered non-Fermi liquid phase of the Luttinger semimetals at zero doping, where the decay rate associated with the (strong) Coulomb interactions is much larger than the…

强关联电子 · 物理学 2024-06-25 Hermann Freire , Ipsita Mandal

The empirical formula of Timmermanns connecting the density of the crystal at zero absolute temperature with the parameters of the critical point of the gas-liquid phase transition is derived theoretically from the Van der Waals equation of…

统计力学 · 物理学 2013-08-14 Ikhtier Umirzakov

The Helmholtz equation in one dimension, which describes the propagation of electromagnetic waves in effectively one-dimensional systems, is equivalent to the time-independent Schr\"odinger equation. The fact that the potential term…

经典物理 · 物理学 2021-09-15 Farhang Loran , Ali Mostafazadeh

Transition metal dichalcogenides (TMDs) are known to have a wide variety of magnetic structures by hosting other transition metal atoms in the van der Waals gaps. To understand the chemical trend of the magnetic properties of the…

材料科学 · 物理学 2023-05-24 Tatsuto Hatanaka , Takuya Nomoto , Ryotaro Arita

In many physical situations in which many-body assemblies exist at temperature $T$, a characteristic quantum-mechanical time scale of approximately $\hbar/k_{B}T$ can be identified in both theory and experiment, leading to speculation that…

We analyze closed one-dimensional chains of weakly coupled many level systems, by means of the so-called Hilbert space average method (HAM). Subject to some concrete conditions on the Hamiltonian of the system, our theory predicts energy…

统计力学 · 物理学 2007-05-23 Mathias Michel , Jochen Gemmer , Guenter Mahler

We investigate deformations of Lifshitz holography in $(n+1)$ dimensional spacetime. After discussing the situation for general Lifshitz scaling symmetry parameter $z$, we consider $z=n-1$ and the associated marginally relevant operators.…

高能物理 - 理论 · 物理学 2012-10-16 Miok Park , Robert B. Mann

The inherent structures ({\it IS}) are the local minima of the potential energy surface or landscape, $U({\bf r})$, of an {\it N} atom system. Stillinger has given an exact {\it IS} formulation of thermodynamics. Here the implications for…

统计力学 · 物理学 2009-11-10 T. Keyes , J. Chowdhary

For 1D Hamiltonian systems with periodic solutions, Helmholtz formalism provides a tantalizing interpretation of classical thermodynamics, based on time integrals of purely mechanical quantities and without need of statistical description.…

统计力学 · 物理学 2023-02-28 Amilcare Porporato , Lamberto Rondoni

A model of a bulk water system describing the vibrational motion of intramolecular and intermolecular modes is constructed, enabling analysis of its linear and nonlinear vibrational spectra, as well as the energy transfer processes between…

计算物理 · 物理学 2023-02-21 Hideaki Takahashi , Yoshitaka Tanimura

A generalized Mott relation of metal melting entropy is derived by means of non-extensive solid and liquid quantum entropy that we calculate from grand partition functions of localized ordered quantum solid and of disordered quantum…

统计力学 · 物理学 2014-10-07 P. Quarati , A. M. Scarfone

The impedance boundary condition is used to calculate the Casimir force in configurations of two parallel plates and a shpere (spherical lens) above a plate at both zero and nonzero temperature. The impedance approach allows one to find the…

量子物理 · 物理学 2009-11-07 V. B. Bezerra , G. L. Klimchitskaya , C. Romero

The van der Waals (vdW) theory of fluids is the first and simplest theory that takes into account interactions between the particles of a system that result in a phase transition versus temperature. Combined with Maxwell's construction,…

软凝聚态物质 · 物理学 2018-02-12 David C. Johnston

We present a finite element discretization of a non-linear diffusion equation used in the field of critical phenomena and, more recently, in the context of Dynamic Density Functional Theory. The discretized equation preserves the structure…

统计力学 · 物理学 2015-06-23 J. A. de la Torre , Pep Español , Aleksandar Donev

The 1%-accurate calculations of the van der Waals interaction between an atom and a cavity wall are performed in the separation region from 3 nm to 150 nm. The cases of metastable He${}^{\ast}$ and Na atoms near the metal, semiconductor or…

量子物理 · 物理学 2009-11-11 A. O. Caride , G. L. Klimchitskaya , V. M. Mostepanenko , S. I. Zanette

The structural, dynamical, and thermodynamical properties of diamond, graphite and layered derivatives (graphene, rhombohedral graphite) are computed using a combination of density-functional theory (DFT) total-energy calculations and…

材料科学 · 物理学 2009-11-10 Nicolas Mounet , Nicola Marzari
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