Results 21 to 30 of about 71,617 (299)
Pre-Big-Bang Black-Hole Remnants and Past Low Entropy
Universe, 2018 Dark matter could be composed by black-hole remnants formed before the big-bang era in a bouncing cosmology. This hypothetical scenario has implications on the issue of the arrow of time: it upsets a common attribution of past low entropy to the state of
Carlo Rovelli, Francesca Vidotto
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Entropy and Cosmological Arrows of Time [PDF]
, 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
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Complex Time Approach to the Hamiltonian and the Entropy Production of the Damped Harmonic Oscillator [PDF]
EntropyThe present work applies and extends the previously developed Quantitative Geometrical Thermodynamics (QGT) formalism to the derivation of a Hamiltonian for the damped harmonic oscillator (DHO) across all damping regimes.
Kyriaki-Evangelia Aslani
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Two Types of Temporal Symmetry in the Laws of Nature [PDF]
EntropyThis work explores the implications of assuming time symmetry and applying bridge-type, time-symmetric temporal boundary conditions to deterministic laws of nature with random components.
A. Y. Klimenko
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Comment on "Entropy production and the arrow of time" [PDF]
, 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
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Entropy Production and Thermodynamic Arrow of Time in a Recollapsing\n Universe [PDF]
, 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
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Entropy, Biological Evolution and the Psychological Arrow of Time
Journal of Modern Physics, 2016 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
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Entropy, 2012 Quantum gravity, the initial low entropy state of the Universe, and the problem of time are interlocking puzzles. In this article, we address the origin of the arrow of time from a cosmological perspective motivated by a novel approach to quantum ...
Djordje Minic +3 more
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Arrow of time: Metaphorical construals of entropy and the second law of thermodynamics
Science Education, 2012 AbstractVarious features of scientific discourse have been characterized in the science education literature, and challenges students face in appropriating these features have been explored. Using the framework of conceptual metaphor, this paper sought to identify explicit and implicit metaphors in pedagogical texts dealing with the concept of entropy ...
Tamer G. Amin +3 more
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Entropy Maximization, Time Emergence, and Phase Transition [PDF]
EntropyWe survey developments in the use of entropy maximization for applying the Gibbs Canonical Ensemble to finite situations. Biological insights are invoked along with physical considerations.
Jonathan Smith
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