Results 21 to 30 of about 177,691 (298)

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

How “Berry Phase” Analysis of Non-Adiabatic Non-Hermitian Systems Reflects Their Geometry

open access: yesEntropy, 2023
There is currently great interest in systems represented by non-Hermitian Hamiltonians, including a wide variety of real systems that may be dissipative and whose behaviour can be represented by a “phase” parameter that characterises the way “exceptional
Chris Jeynes
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

The Holographic Model of Dark Energy and Thermodynamics of Non-Flat Accelerated Expanding Universe [PDF]

open access: yes, 2006
Motivated by recent results on non-vanishing spatial curvature \cite{curve} we employ the holographic model of dark energy to investigate the validity of first and second laws of thermodynamics in non-flat (closed) universe enclosed by apparent horizon ...
Almeida J P B Pereira J G   +23 more
core   +3 more sources

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

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 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

Varying c and Particle Horizons [PDF]

open access: yes, 2001
We explore what restrictions may impose the second law of thermodynamics on varying speed of light theories. We find that the attractor scenario solving the flatness problem is consistent with the generalized second law at late time.Comment: Latex file ...
Albrecht   +33 more
core   +3 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

Home - About - Disclaimer - Privacy