Results 21 to 30 of about 12,689 (247)

Thermodynamics in f(G,T) Gravity

open access: yesAdvances in High Energy Physics, 2018
This paper explores the nonequilibrium behavior of thermodynamics at the apparent horizon of isotropic and homogeneous universe model in f(G,T) gravity (G and T represent the Gauss-Bonnet invariant and trace of the energy-momentum tensor, resp.).
M. Sharif, Ayesha Ikram
doaj   +1 more source

Extended irreversible thermodynamics of heat transport. A brief introduction; pp. 118–126 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2008
Current frontiers of technology require generalized transport equations incorporating memory, non-local effects, and non-linear effects. Extended Irreversible Thermodynamics provides such transport equations in a form compatible with the second law of ...
David Jou   +2 more
doaj   +1 more source

Second law of thermodynamics for batteries with vacuum state [PDF]

open access: yesQuantum, 2021
In stochastic thermodynamics work is a random variable whose average is bounded by the change in the free energy of the system. In most treatments, however, the work reservoir that absorbs this change is either tacitly assumed or modelled using ...
Patryk Lipka-Bartosik   +2 more
doaj   +1 more source

Radiation Entropy Bound from the Second Law of Thermodynamics

open access: yesEntropy, 2012
It has been suggested heuristically by Unruh and Wald, and independently by Page, that at given energy and volume, thermal radiation has the largest entropy. The suggestion leads to the corresponding universal bound on entropy of physical systems.
Itzhak Fouxon
doaj   +1 more source

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   +1 more source

Thermodynamics in modified Brans–Dicke gravity with entropy corrections

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In this paper, we investigate the thermodynamics in the frame-work of recently proposed theory called modified Brans–Dicke gravity (Kofinas et al. in Class Quantum Gravity 33:15, 2016).
Shamaila Rani   +3 more
doaj   +1 more source

"A calorie is a calorie" violates the second law of thermodynamics

open access: yesNutrition Journal, 2004
The principle of "a calorie is a calorie," that weight change in hypocaloric diets is independent of macronutrient composition, is widely held in the popular and technical literature, and is frequently justified by appeal to the laws of thermodynamics ...
Fine Eugene J, Feinman Richard D
doaj   +1 more source

Limits of Landauer’s principle and of the second law of thermodynamics

open access: yesEntropie
Since 1857, the second law of thermodynamics has faced the challenge of Maxwell’s imagined demon. The widely accepted response to this challenge suggests that the demon requires a bit of information to work, and according to Landauer’s principle ...
Jean Argouarc’h
doaj   +1 more source

Gravitational Entropy and the Second Law of Thermodynamics

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   +1 more source

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