Results 31 to 40 of about 177,235 (274)

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

Generalized Second Law of Thermodynamics for Non-canonical Scalar Field Model with Corrected-Entropy [PDF]

open access: yes, 2015
In this work, we have considered a non-canonical scalar field dark energy model in the framework of flat FRW background. It has also been assumed that the dark matter sector interacts with the non-canonical dark energy sector through some interaction ...
Das, Sudipta   +2 more
core   +2 more sources

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

Correlations in quantum thermodynamics: Heat, work, and entropy production [PDF]

open access: yes, 2016
We provide a characterization of energy in the form of exchanged heat and work between two interacting constituents of a closed, bipartite, correlated quantum system.
Afsary, M.   +5 more
core   +2 more sources

Helping Pregraduate Students Reach Deep Understanding of the Second Law of Thermodynamics

open access: yesEducation Sciences, 2021
Pregraduate students often have low success expectations toward their thermodynamics courses, which are often considered too abstract and remarkably difficult to understand. For this reason, they may not even try to reach any level of comprehension while
Lorena Atarés   +5 more
doaj   +1 more source

Interacting Three Fluid System and Thermodynamics of the Universe Bounded by the Event Horizon [PDF]

open access: yes, 2010
The work deals with the thermodynamics of the universe bounded by the event horizon. The matter in the universe has three constituents namely dark energy, dark matter and radiation in nature and interaction between then is assumed.
A.G. Riess   +53 more
core   +1 more source

Thermodynamics of Lemaitre-Tolman-Bondi Model

open access: yes, 2010
Here we consider our universe as inhomogeneous spherically symmetric Lemaitre-Tolman-Bondi Model and analyze the thermodynamics of this model of the universe. The trapping horizon is calculated and is found to coincide with the apparent horizon.
Biswas, Ritabrata   +2 more
core   +1 more source

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