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Supernovae and the Arrow of Time [PDF]

open access: yesEntropy, 2022
Supernovae are explosions of stars and are a central problem in astrophysics. Rayleigh–Taylor (RT) and Richtmyer–Meshkov (RM) instabilities develop during the star’s explosion and lead to intense interfacial RT/RM mixing of the star materials.
Snezhana I. Abarzhi   +4 more
doaj   +4 more sources

Algebraical Entropy and Arrow of Time [PDF]

open access: yesEntropy, 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   +4 more sources

The arrow of time in Parkinson’s disease [PDF]

open access: yesNeuroImage: Clinical
Background: Parkinson’s disease (PD) is a system-level disorder that implicates brain network dynamics across multiple scales. Detecting the ‘arrow of time’, or temporal reversibility of the brain’s information processing flow enables quantification of ...
Fatemeh Sadeghi   +9 more
doaj   +6 more sources

Modeling Time’s Arrow [PDF]

open access: yesEntropy, 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
doaj   +7 more sources

A Computer's Arrow of Time [PDF]

open access: yesEntropy, 2005
: Some researchers believe that the psychological or consciousness arrow of time is a consequence of the thermodynamic arrow. Some don't. As for many issues in this area, the disagreement revolves about fundamental and undebatable assumptions.
L. S. Schulman
doaj   +2 more sources

A Lenient Causal Arrow of Time? [PDF]

open access: yesEntropy, 2018
One of the basic assumptions underlying Bell’s theorem is the causal arrow of time, having to do with temporal order rather than spatial separation.
Nathan Argaman
doaj   +2 more sources

On the Arrow of Time

open access: yesJournal of Modern Physics, 2014
We believe the following three ingredients are enough to explain the mystery of the arrow of time: (1). equations of dynamics of gas molecules, (2). chaotic instabilities of the equations of dynamics, (3). unavoidable perturbations to the gas molecules. The level of physical rigor or mathematical rigor that can be reached for such a theory is unclear.
Li, Y. Charles, Yang, Hong
exaly   +3 more sources

The Universal Arrow of Time [PDF]

open access: yesFoundations of Physics, 2012
Statistical physics cannot explain why a thermodynamic arrow of time exists, unless one postulates very special and unnatural initial conditions. Yet, we argue that statistical physics can explain why the thermodynamic arrow of time is universal, i.e., why the arrow points in the same direction everywhere.
Oleg Kupervasser   +2 more
exaly   +4 more sources

Arrow of Time in Quantum Mechanics and Set Theory [PDF]

open access: yesEntropy
The set-theory twist of quantum mechanics uncovers forcing in axiomatic Zermelo–Fraenkel set theory as a viable tool to understand the singularities in a physical spacetime and serves as a link between the quantum and classical worlds. The random forcing
Jerzy Król
doaj   +2 more sources

Fluctuation, Dissipation and the Arrow of Time [PDF]

open access: yesEntropy, 2011
The recent development of the theory of fluctuation relations has led to new insights into the ever-lasting question of how irreversible behavior emerges from time-reversal symmetric microscopic dynamics.
Peter Hänggi, Michele Campisi
doaj   +5 more sources

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