Results 31 to 40 of about 177,691 (298)

Thermodynamics in f(R,T) Theory of Gravity

open access: yes, 2012
A non-equilibrium picture of thermodynamics is discussed at the apparent horizon of FRW universe in $f(R,T)$ gravity, where $R$ is the Ricci scalar and $T$ is the trace of the energy-momentum tensor.
Sharif, M., Zubair, M.
core   +1 more source

Second Law-Like Inequalities with Quantum Relative Entropy: An Introduction [PDF]

open access: yes, 2012
We review the fundamental properties of the quantum relative entropy for finite-dimensional Hilbert spaces. In particular, we focus on several inequalities that are related to the second law of thermodynamics, where the positivity and the monotonicity of
Sagawa, Takahiro
core   +1 more source

Fermi's golden rule and the second law of thermodynamics [PDF]

open access: yes, 2020
We present a Gedankenexperiment that leads to a violation of detailed balance if quantum mechanical transition probabilities are treated in the usual way by applying Fermi's "golden rule".
Braak, Daniel, Mannhart, Jochen
core   +2 more sources

Heat Transfer and Second Law Analyses for Laminar Film Condensation on a Finite-Size Horizontal Disk

open access: yesJournal of Thermal Science and Technology, 2007
This study applies the first and second laws of thermodynamics to investigate the problem of steady filmwise condensation on a finite-size horizontal disk.
Tong-Bou CHANG
doaj   +1 more source

On Thermodynamics, Entropy and Evolution of Biological Systems: What Is Life from a Physical Chemist's Viewpoint

open access: yesEntropy, 1999
: Life in the universe originated and is evolving in accordance with the general laws of nature, specifically, the law of temporal hierarchies and the second law of thermodynamics.
Georgi P. Gladyshev
doaj   +1 more source

The second laws of quantum thermodynamics [PDF]

open access: yesProceedings of the National Academy of Sciences, 2015
Significance In ordinary thermodynamics, transitions are governed by a single quantity–the free energy. Its monotonicity is a formulation of the second law. Here, we find that the second law for microscopic or highly correlated systems takes on a very different form than it does at the macroscopic scale, imposing not just one constraint on ...
Brandaoa, Fernando   +4 more
openaire   +5 more sources

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

The Rectified Second Law of Thermodynamics [PDF]

open access: yesThe Journal of Physical Chemistry B, 2006
Equilibrium thermodynamics is combined with Jarzynski's irreversible work theorem to quantify the excess entropy produced by irreversible processes. The resulting rectified form of the second law parallels the first law, in the sense that it facilitates the experimental measurement of excess entropy changes resulting from irreversible work and heat ...
Ben-Amotz, Dor, Honig, J. M.
openaire   +3 more sources

Clustering of Galaxies with Dynamical Dark Energy

open access: yes, 2017
In this paper, we study thermodynamics of the cluster of galaxies under the effect of dynamical dark energy. We evaluate the configurational integral for interacting system of galaxies in an expanding universe by including the effects produced by the ...
Faizal, Mir   +3 more
core   +1 more source

Ionic Control of Microstructure and Lubrication in Charged, Physically Cross‐Linked Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
Here, charged, physically cross‐linked poly(methacrylamide‐co‐methacrylic acid) hydrogels stabilized by a short‐range attractive, long‐range repulsive potential is investigated. This work uncovers how salt addition alters not only swelling, but also the microstructure and dynamics, near‐surface stiffness and charge, and ultimately, its lubricity. Salts
Alexander Deptula   +1 more
wiley   +1 more source

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