Results 51 to 60 of about 169,010 (181)

Generalized second law of thermodynamics in massive gravity

European Physical Journal C: Particles and Fields
Here, we study the generalized second law (GSL) of thermodynamics in the framework of massive gravity. To do this, we consider a FRW universe filled only with matter and enclosed by the apparent horizon.
Mohammad Beigmohammadi, Kayoomars Karami
doaj   +1 more source

Unified Classical Thermodynamics: Primacy of Dissymmetry over Free Energy

Thermo
In thermodynamic theory, free energy (i.e., available energy) is the concept facilitating the combined applications of the theory’s two fundamental laws, the first and the second laws of thermodynamics.
Lin-Shu Wang
doaj   +1 more source

Violations of the weak cosmic censorship conjecture in the higher dimensional f(R) black holes with pressure

European Physical Journal C: Particles and Fields, 2020
We adopt the energy momentum relation of charged particles to study the thermodynamics laws and weak cosmic censorship conjecture of D-dimensional f(R) AdS black holes in different phase spaces by considering charged particle absorption.
Ke-Jian He, Guo-Ping Li, Xin-Yun Hu
doaj   +1 more source

Study of GSLT in Curvature-Matter Coupling Gravity

EPJ Web of Conferences, 2018
In this work, we study the first and generalized second laws of thermodynamics at the apparent horizon of homogeneous and isotropic universe model in the context of f (G, T) gravity (G and T represent the Gauss-Bonnet invariant and trace of the ...
Sharif Muhammad, Ikram Ayesha
doaj   +1 more source

Infrared Cloaking, Stealth, and the Second Law of Thermodynamics

Entropy, 2012
Infrared signature management (IRSM) has been a primary aeronautical concern for over 50 years. Most strategies and technologies are limited by the second law of thermodynamics.
Daniel P. Sheehan
doaj   +1 more source

On the second law of thermodynamics

, 2019
The key purpose of this article is to clarify the foundations of classical statistical mechanics. It is argued that the relevant concepts and laws, e.g.
Henriksson, Andreas
core  

Viscous dark energy and generalized second law of thermodynamics

, 2011
We examine the validity of the generalized second law of thermodynamics in a non-flat universe in the presence of viscous dark energy. At first we assume that the universe filled only with viscous dark energy.
A. SHEYKHI, Brevik I., M. R. SETARE, Setare M. R.   +3 more
core   +1 more source

The second law and beyond in microscopic quantum setups

, 2018
The Clausius inequality (CI) is one of the most versatile forms of the second law. Although it was originally conceived for macroscopic steam engines, it is also applicable to quantum single particle machines.
A Lenard, A Levy, A Streltsov, C Jarzynski, C Jarzynski, C Jarzynski, C Jarzynski, F Binder, F Tacchino, HJD Miller, J Goold, J Roßnagel, JB Brask, JG Kirkwood, JP Santos, M Campisi, M Esposito, M Esposito, M Lostaglio, M Perarnau-Llobet, M Perarnau-Llobet, M Perarnau-Llobet, P Faist, P Kammerlander, P Strasberg, R Harris, R Uzdin, S Deffner, S Deffner, S Still, T Speck, U Seifert, W Niedenzu, Y Guryanova   +33 more
core   +1 more source

Quantum Collapse and the Second Law of Thermodynamics

, 2012
A heat engine undergoes a cyclic operation while in equilibrium with the net result of conversion of heat into work. Quantum effects such as superposition of states can improve an engine's efficiency by breaking detailed balance, but this improvement ...
A. N. Kolmogorov, M. von Smoluchowski, Sahand Hormoz   +2 more
core   +1 more source

Toward Improved Understanding of the Physical Meaning of Entropy in Classical Thermodynamics

Entropy, 2016
The year 2015 marked the 150th anniversary of “entropy” as a concept in classical thermodynamics. Despite its central role in the mathematical formulation of the Second Law and most of classical thermodynamics, its physical meaning continues to be ...
Ben Akih-Kumgeh
doaj   +1 more source