Results 31 to 40 of about 378,092 (297)

Covariant thermodynamics of an object with finite volume [PDF]

open access: yesPhysics Letters A, 2006
A covariant way to define the relativistic entropy of a finite object has been proposed. The energy-momentum of an object with finite volume is not a covariant physical entity because of the relativity of simultaneity. A way to correctly handle this situation is introduced and applied to the calculation of entropy.
openaire   +3 more sources

Weinhold geometry and thermodynamics of Bardeen AdS black holes

open access: yesNuclear Physics B, 2022
Thermodynamics of Bardeen AdS black holes has attracted a great deal of attentions due to its intrinsic complications and rich phase structures. However, the entropy and thermodynamic volume are incorrect in some literatures. In this paper we revisit the
Yang Guo, Yan-Gang Miao
doaj  

Thermodynamics and weak cosmic censorship conjecture in extended phase spaces of anti-de Sitter black holes with particles’ absorption

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
The thermodynamics and weak cosmic censorship conjecture in extended phase spaces of charged anti-de Sitter black holes describing the massive gravity are investigated by the absorptions of the scalar particle and fermion.
Deyou Chen
doaj   +1 more source

Thermodynamics and Chemistry of the Early Universe [PDF]

open access: yes, 2018
The interplay between chemistry and thermodynamics determines the final outcome of the process of gravitational collapse and sets the conditions for the formation of the first cosmological objects, including primordial supermassive black holes.
Bovino, Stefano, Galli, Daniele
core   +2 more sources

Defining the pressures of a fluid in a nanoporous, heterogeneous medium

open access: yesFrontiers in Physics, 2022
We describe the thermodynamic state of a single-phase fluid confined to a porous medium with Hill’s thermodynamics of small systems, also known as nanothermodynamics.
Olav Galteland   +4 more
doaj   +1 more source

A New Thermodynamically Compatible Finite Volume Scheme for Magnetohydrodynamics

open access: yesSIAM Journal on Numerical Analysis, 2023
In this paper we propose a novel thermodynamically compatible finite volume scheme for the numerical solution of the equations of magnetohydrodynamics (MHD) in one and two space dimensions. As shown by Godunov in 1972, the MHD system can be written as overdetermined symmetric hyperbolic and thermodynamically compatible (SHTC) system.
Busto, S, Dumbser, M
openaire   +2 more sources

Analysis of the thermomechanical inconsistency of some extended hydrodynamic models at high Knudsen number [PDF]

open access: yes, 2012
There are some hydrodynamic equations that, while their parent kinetic equation satisfies fundamental mechanical properties, appear themselves to violate mechanical or thermodynamic properties.
B. V. Alexeev   +9 more
core   +2 more sources

Specific heat at constant volume in the thermodynamic model [PDF]

open access: yesPhysical Review C, 2003
Revtex, 7 pages including 4 ...
Aram Mekjian, C. B. Das, S. Das Gupta
openaire   +3 more sources

A New Entropy Function to Analyze Isentropic Processes of Ideal Gases with Variable Specific Heats

open access: yesEntropy, 2022
A new entropy function s+ is defined in terms of the existing entropy function s° and temperature as s+ = s° − R lnT to facilitate the analysis of isentropic processes of ideal gases with variable specific heats. The function s+ also makes it possible to
Yunus A. Çengel, Mehmet Kanoğlu
doaj   +1 more source

Confinement and the AdS/CFT Correspondence [PDF]

open access: yes, 2000
We study the thermodynamics of the confined and unconfined phases of superconformal Yang-Mills in finite volume and at large N using the AdS/CFT correspondence.
Avis   +17 more
core   +3 more sources

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