Results 21 to 30 of about 5,007,076 (313)

Probability as a Physical Motive

open access: yesEntropy, 2007
Recent theoretical progress in nonequilibrium thermodynamics, linking thephysical principle of Maximum Entropy Production (“MEP”) to the information-theoretical“MaxEnt” principle of scientific inference, together with conjectures from
Peter Martin
doaj   +1 more source

Entropy, holography and the second law [PDF]

open access: yes, 2004
The geometric entropy in quantum field theory is not a Lorentz scalar and has no invariant meaning, while the black hole entropy is invariant. Renormalization of entropy and energy for reduced density matrices may lead to the negative free energy even if
A. Peres   +15 more
core   +1 more source

The adiabatic piston: a perpetuum mobile in the mesoscopic realm

open access: yesEntropy, 2004
: A detailed analysis of the adiabatic-piston problem reveals, for a finely-tuned choice of the spatial dimensions of the system, peculiar dynamical features that challenge the statement that an isolated system necessarily reaches a time-independent ...
Claudio Conti   +2 more
doaj   +1 more source

Implementing Demons and Ratchets

open access: yesEntropy, 2017
Experimental results show that ratchets may be implemented in semiconductor and chemical systems, bypassing the second law and opening up huge gains in energy production.
Peter M. Orem, Frank M. Orem
doaj   +1 more source

Infinite family of second-law-like inequalities [PDF]

open access: yes, 2012
The probability distribution function for an out of equilibrium system may sometimes be approximated by a physically motivated "trial" distribution.
Kolton, Alejandro B.   +2 more
core   +2 more sources

Bayesian second law of thermodynamics

open access: yesPhysical Review E, 2016
We derive a generalization of the Second Law of Thermodynamics that uses Bayesian updates to explicitly incorporate the effects of a measurement of a system at some point in its evolution. By allowing an experimenter's knowledge to be updated by the measurement process, this formulation resolves a tension between the fact that the entropy of a ...
Bartolotta, Anthony   +3 more
openaire   +5 more sources

Exergy Destruction Analysis of a Gas Turbine Power Plant

open access: yesHittite Journal of Science and Engineering, 2018
According to the data released by “Republic of Turkey-the Ministry of Energy and Natural Resources”, by the end of July 2017, 34% of the electricity of Turkey was produced from natural gas.
Mehmet Kiris, Ali Kilicarslan
doaj   +1 more source

Editorial: Entropy in Landscape Ecology

open access: yesEntropy, 2018
Entropy and the second law of thermodynamics are the central organizing principles of nature, but the ideas and implications of the second law are poorly developed in landscape ecology.
Samuel A. Cushman
doaj   +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

Assesment of Thermodynamic Irreversibility in a Micro-Scale Viscous Dissipative Circular Couette Flow

open access: yesEntropy, 2018
We investigate the effect of viscous dissipation on the thermal transport characteristics of heat and its consequence in terms of the entropy-generation rate in a circular Couette flow.
Pranab Kumar Mondal, Somchai Wonwises
doaj   +1 more source

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