Results 51 to 60 of about 1,322,592 (368)

Thermodynamics of cosmological horizons in $f(T)$ gravity

, 2011
We explore thermodynamics of the apparent horizon in $f(T)$ gravity with both equilibrium and non-equilibrium descriptions. We find the same dual equilibrium/non-equilibrium formulation for $f(T)$ as for $f(R)$ gravity.
, A. De Felice, A. Einstein, C. Deliduman, C.-Q. Geng, C.G. Boehmer, C.Q. Geng, Chao-Qiang Geng, D. Bak, G. Cognola, H. Mohseni Sadjadi, H. Wei, H. Wei, J. Garecki, J.B. Dent, J.E. Lidsey, K. Bamba, K. Bamba, K. Bamba, K. Bamba, K. Karami, K. Yerzhanov, Kazuharu Bamba, L. Belo, M. Daouda, M. Daouda, M. Li, N. Sakai, P. Gonzalez, P.B. Khatua, R. Myrzakulov, R. Zheng, R.-G. Cai, R.-G. Cai, R.-J. Yang, R.-J. Yang, R.-X. Miao, R.-X. Miao, S.-F. Wu, S.A. Hayward, SDSS collaboration, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T. Clifton, T. Padmanabhan, T. Padmanabhan, WMAP collaboration, WMAP collaboration, WMAP collaboration, WMAP collaboration, Y. Gong, Y. Yokokura, Y. Zhang, Y.-F. Cai, Y.-P. Wu   +54 more
core   +1 more source

Entropy and Entropy Production in Multiscale Dynamics

, 2018
Heat conduction is investigated on three levels: equilibrium, Fourier, and Cattaneo. The Fourier level is either the point of departure for investigating the approach to equilibrium or the final stage in the investigation of the approach from the ...
Bendian, Nie, Cao, Bing-Yang, Grmela, Miroslav, Klika, Vaclav, Pavelka, Michal   +4 more
core   +1 more source

Thermodynamics in $f(R)$ gravity in the Palatini formalism

, 2010
We investigate thermodynamics of the apparent horizon in $f(R)$ gravity in the Palatini formalism with non-equilibrium and equilibrium descriptions. We demonstrate that it is more transparent to understand the horizon entropy in the equilibrium framework
, , , , A. Sheykhi, A. Sheykhi, A. Silvestri, A. Wang, A.G. Riess ., A.V. Frolov, C. Eling, Chao-Qiang Geng, D. Bak, D.N. Vollick, E. Barausse, E. Barausse, E.E. Flanagan, E.N. Saridakis, F. Caravelli, F.S.N. Lobo, G. Cognola, G.J. Olmo, J.E. Lidsey, K. Bamba, K. Xiao, Kazuharu Bamba, L. Iorio, M. Akbar, M. Sami, M.K. Parikh, M.L. Ruggiero, N. Sakai, R.-G. Cai, R.-G. Cai, S. Capozziello, S. Capozziello, S. Mukohyama, S. Nojiri, S.-F. Wu, S.-F. Wu, S.A. Hayward, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T. Koivisto, T. Padmanabhan, T. Padmanabhan, T.P. Sotiriou, V. Sahni, W. Buchmüller, WMAP collaboration, WMAP collaboration, WMAP collaboration, WMAP collaboration, Y. Gong, Y.S. Myung   +54 more
core   +1 more source

Thermodynamics in f(R,T) Theory of Gravity

, 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

Brownian Motors driven by Particle Exchange

, 1997
We extend the Langevin dynamics so that particles can be exchanged with a particle reservoir. We show that grand canonical ensembles are realized at equilibrium and derive the relations of thermodynamics for processes between equilibrium states.
Adams D. J., Astumian R. D., Astumian R. D., Astumian R. D., Feynmann R. P., Hoover W. G., Magnasco M. O., Magnasco M. O., Nosé S., Prost J., Sekimoto K., Sekimoto K., Van Kampen N. G., Zhou H. X., Çagin T.   +14 more
core   +1 more source

Equilibrium to Einstein: Entanglement, Thermodynamics, and Gravity [PDF]

, 2018
Here we develop the connection between thermodynamics, entanglement, and gravity. By attributing thermodynamics to timeslices of a causal diamond, we show that the Clausius relation $T\Delta S_{\text{rev}}=Q$, where $\Delta S_{\text{rev}}$ is the ...
Andrew Svesko
semanticscholar   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Kinetic equilibrium and relativistic thermodynamics

EPJ Web of Conferences, 2011
Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized Jüttner distribution suggested in [1] is compatible with kinetic equilibrium.
Ván P.
doaj   +1 more source

Macroscopic thermodynamics of equilibrium characterized by power-law canonical distributions

, 2000
Macroscopic thermodynamics of equilibrium is constructed for systems obeying power-law canonical distributions. With this, the connection between macroscopic thermodynamics and microscopic statistical thermodynamics is generalized.
A. K Rajagopal, Abe S., Abe S., Abe S., Khinchin A. I., Kubo R., S Abe, S. Abe, Taguchi Y.-H.   +8 more
core   +1 more source