Results 11 to 20 of about 169,010 (181)

Thermodynamics of Various Entropies in Specific Modified Gravity with Particle Creation

open access: yesAdvances in High Energy Physics, 2018
We consider the particle creation scenario in the dynamical Chern-Simons modified gravity in the presence of perfect fluid equation of state p=(γ-1)ρ. By assuming various modified entropies (Bekenstein entropy logarithmic entropy, power law correction ...
Abdul Jawad   +2 more
doaj   +2 more sources

Revisions of the Phenomenological and Statistical Statements of the Second Law of Thermodynamics [PDF]

open access: yesEntropy
The status of the Second Law of Thermodynamics, even in the 21st century, is not as certain as when Arthur Eddington wrote about it a hundred years ago.
Grzegorz Marcin Koczan, Roberto Zivieri
doaj   +2 more sources

Thermodynamics of the FRW Universe at the Event Horizon in Palatini f(R) Gravity

open access: yesAdvances in High Energy Physics, 2018
In an accelerated expanding universe, one can expect the existence of an event horizon. It may be interesting to study the thermodynamics of the Friedmann-Robertson-Walker (FRW) universe at the event horizon.
A. S. Sefiedgar, M. Mirzazadeh
doaj   +2 more sources

A Symmetric Form of the Clausius Statement of the Second Law of Thermodynamics [PDF]

open access: yesEntropy
Bridgman once reflected on thermodynamics that the laws of thermodynamics were formulated in their present form by the great founders of thermodynamics, Kelvin and Clausius, before all the essential physical facts were in, and there has been no adequate ...
Ti-Wei Xue, Tian Zhao, Zeng-Yuan Guo
doaj   +2 more sources

Can Quantum Correlations Lead to Violation of the Second Law of Thermodynamics? [PDF]

open access: yesEntropy, 2021
Quantum entanglement can cause the efficiency of a heat engine to be greater than the efficiency of the Carnot cycle. However, this does not mean a violation of the second law of thermodynamics, since there is no local equilibrium for pure quantum states,
Alexey V. Melkikh
doaj   +2 more sources

Gravitational Entropy and the Second Law of Thermodynamics [PDF]

open access: yesEntropy, 2015
The spontaneous violation of Lorentz and diffeomorphism invariance in a phase near the big bang lowers the entropy, allowing for an arrow of time and the second law of thermodynamics. The spontaneous symmetry breaking leads to
John W. Moffat
doaj   +5 more sources

What Is the Real Clausius Statement of the Second Law of Thermodynamics? [PDF]

open access: yesEntropy, 2019
In this paper, we first analyze the difference between the second law of thermodynamics and the laws in other disciplines. There are some phenomena in other disciplines similar to the Clausius Statement of the second law, but none of them has been ...
Ti-Wei Xue, Zeng-Yuan Guo
doaj   +2 more sources

Thermodynamics in Rastall gravity with entropy corrections

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We explore the thermodynamic analysis at the apparent horizon in the framework of Rastall theory of gravity. We take different entropies such as the Bakenstein, logarithmic corrected, power law corrected, and the Renyi entropies. We investigate the first
Kazuharu Bamba   +3 more
doaj   +3 more sources

Thermodynamic Analysis of Gravitational Field Equations in Lyra Manifold [PDF]

open access: yesAdvances in High Energy Physics, 2017
Considering the Einstein field equations in Lyra manifold and applying the unified first law of thermodynamics as well as the Clausius relation to the apparent horizon of FRW universe, we find the entropy of apparent horizon in Lyra manifold. In addition,
H. Moradpour   +3 more
doaj   +4 more sources

Holographic bound from second law of thermodynamics [PDF]

open access: green, 2000
A necessary condition for the validity of the holographic principle is the holographic bound: the entropy of a system is bounded from above by a quarter of the area of a circumscribing surface measured in Planck areas.
Jacob D. Bekenstein
openalex   +3 more sources

Home - About - Disclaimer - Privacy