Results 1 to 10 of about 1,532,968 (163)

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.
Bochkov   +6 more
core   +8 more sources

The length of time's arrow [PDF]

open access: yesPhysical Review Letters, 2008
An unresolved problem in physics is how the thermodynamic arrow of time arises from an underlying time reversible dynamics. We contribute to this issue by developing a measure of time-symmetry breaking, and by using the work fluctuation relations, we ...
A. S. Eddington   +6 more
core   +6 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. As a contribution to this standoff I consider the extent to which a computer---presumably governed by nothing ...
L. S. Schulman
openaire   +3 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 gravitation.
Jejjala, Vishnu   +3 more
openaire   +5 more sources

Algebraical Entropy and Arrow of Time

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   +1 more source

Supernovae and the Arrow of Time

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   +1 more source

String theory and the arrow of time

open access: yesJournal of High Energy Physics, 2021
Time-like linear dilaton triggers, at the classical level, the creation of closed folded strings at an instant. We show that in cosmology these instant folded strings induce negative pressure at no energy cost.
Nissan Itzhaki
doaj   +1 more source

Probability, Arrow of Time and Decoherence [PDF]

open access: yes, 2006
This paper relates both to the metaphysics of probability and to the physics of time asymmetry. Using the formalism of decoherent histories, it investigates whether intuitions about intrinsic time directedness that are often associated with probability ...
Bacciagaluppi, Guido
core   +5 more sources

Remarks on the Compatibility of Opposite Arrows of Time

open access: yesEntropy, 2005
: I argue that opposite arrows of time, while being logically possible, cannot realistically be assumed to exist during one and the same epoch of our universe.
H. D. Zeh
doaj   +1 more source

Time, the Arrow of Time, and Quantum Mechanics

open access: yesFrontiers in Physics, 2018
It is brought forward that viable theories of the physical world that have no variable at all that can play the role of time, do not exist; some notion of time is one of the very first ingredients a candidate theory should possess.
Gerard 't Hooft
doaj   +1 more source

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