Results 1 to 10 of about 2,657,488 (271)

Algebraical Entropy and Arrow of Time [PDF]

open access: goldEntropy, 2022
Usually, it is supposed that irreversibility of time appears only in macrophysics. Here, we attempt to introduce the microphysical arrow of time assuming that at a fundamental level nature could be non-associative.
Merab Gogberashvili
doaj   +7 more sources

Entropy and Cosmological Arrows of Time [PDF]

open access: greenarXiv, 2021
Deutsch and Aguirre have recently shown that the solutions of certain dynamical systems typically contain a point of minimum size that they identify as an entropy minimum and from which the size and entropy increase to infinity in both directions of time.
Julian Barbour
arxiv   +5 more sources

Beyond the Arrow of Time: Can There Be a Relation between the Measurement of Entropy and Time? [PDF]

open access: hybridProceedings, 2017
The general tendency of the entropy of an isolated to increase is considered to be directly linked to the direction of the flow of time. This raises the question whether a quantitative relation can be established such that a time interval can be measured
Ben Akih-Kumgeh
doaj   +5 more sources

Comment on "Entropy production and the arrow of time" [PDF]

open access: greenarXiv, 2007
J.M.R. Parrondo at al. in arXiv:0904.1573 continue numerous efforts to unify the concepts of the arrow of time and entropy production with the concept of time invariance in physics. This is a wrong way.
V. A. Kuz’menko
arxiv   +5 more sources

Entropy, Information and Complexity or Which Aims the Arrow of Time? [PDF]

open access: goldEntropy, 2015
In this article, we analyze the interrelationships among such notions as entropy, information, complexity, order and chaos and show using the theory of categories how to generalize the second law of thermodynamics as a law of increasing generalized ...
George E. Mikhailovsky   +1 more
doaj   +4 more sources

Entropy Production and Thermodynamic Arrow of Time in a Recollapsing Universe [PDF]

open access: greenNuovo Cim.B115:1039-1048,2000, 1999
We investigate the thermodynamic arrow of time in a time-symmetrically recollapsing universe by calculating quantum mechanically the entropy production of a massive scalar field. It is found that even though the Hamiltonian has a time-reversal symmetry with respect to the maximum expansion of the universe, the entropy production is generic and the ...
Sang Pyo Kim
arxiv   +6 more sources

Is the Hypothesis About a Low Entropy Initial State of the Universe Necessary for Explaining the Arrow of Time? [PDF]

open access: greenPhys. Rev. D 94, 023520 (2016), 2016
According to statistical mechanics, micro-states of an isolated physical system (say, a gas in a box) at time $t_0$ in a given macro-state of less-than-maximal entropy typically evolve in such a way that the entropy at time $t$ increases with $|t-t_0|$ in both time directions.
Sheldon Goldstein   +2 more
arxiv   +8 more sources

Wormholes and the thermodynamic arrow of time [PDF]

open access: yesPhysical Review Research, 2020
In classical thermodynamics, heat cannot spontaneously pass from a colder system to a hotter system, which is called the thermodynamic arrow of time. However, if the initial states are entangled, the direction of the thermodynamic arrow of time may not ...
Zhuo-Yu Xian, Long Zhao
doaj   +2 more sources

Temporal Asymmetry, Entropic Irreversibility, and Finite-Time Thermodynamics: From Parmenides–Einstein Time-Reversal Symmetry to the Heraclitan Entropic Arrow of Time [PDF]

open access: goldEntropy, 2012
In this paper, we combine the two universalisms of thermodynamics and dynamical systems theory to develop a dynamical system formalism for classical thermodynamics. Specifically, using a compartmental dynamical system energy flow model we develop a state-
Wassim M. Haddad
doaj   +2 more sources

Entropy, biological evolution and the psychological arrow of time [PDF]

open access: greenarXiv, 2014
We argue that in Universes where future and past differ only by the entropy content a psychological arrow of time pointing in the direction of entropy increase can arise from natural selection in biological evolution. We show that this effect can be demonstrated in very simple toy computer simulations of evolution in an entropy increasing or decreasing
Torsten Heinrich   +2 more
arxiv   +4 more sources

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