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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   +6 more sources

Entropy production and the arrow of time

open access: yesNew Journal of Physics, 2009
We present an exact relationship between the entropy production and the distinguishability of a process from its time-reverse, quantified by the relative entropy between forward and backward states.
  +16 more
core   +5 more sources

Pre-bangian origin of our entropy and time arrow [PDF]

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1999
I argue that, in the chaotic version of string cosmology proposed recently, classical and quantum effects generate, at the time of exit to radiation, the correct amount of entropy to saturate a Hubble (or holography) entropy bound (HEB) and to identify ...
Veneziano, G.
core   +6 more sources

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

open access: yesEntropy, 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

Gravitational Entropy and the Second Law of Thermodynamics [PDF]

open access: yesEntropy, 2014
The spontaneous violation of Lorentz and diffeomorphism invariance in a phase near the big bang lowers the entropy, allowing for an arrow of time and the second law of thermodynamics.
Moffat, J. W.
core   +5 more sources

Pre-big-bang black-hole remnants and the past low entropy

open access: yesUniverse, 2018
Dark matter could be composed by black-hole remnants formed before the big-bang era in a bouncing cosmology. This hypothetical scenario has major implications on the issue of the arrow of time: it would upset a common attribution of past low entropy to ...
Rovelli, Carlo, Vidotto, Francesca
core   +5 more sources

Entropy and Time

open access: yesEntropy, 2020
The idea that entropy is associated with the “arrow of time” has its roots in Clausius’s statement on the Second Law: “Entropy of the Universe always increases.” However, the explicit association of the entropy with time’s arrow arises from Eddington. In
Arieh Ben-Naim
doaj   +3 more sources

Complex Time Approach to the Hamiltonian and the Entropy Production of the Damped Harmonic Oscillator. [PDF]

open access: yesEntropy (Basel)
The 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.
Aslani KE.
europepmc   +2 more sources

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

open access: yesProceedings, 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   +2 more sources

Entropy production in systems with unidirectional transitions

open access: yesPhysical Review Research, 2020
The entropy production is one of the most essential features for systems operating out of equilibrium. The formulation for discrete-state systems goes back to the celebrated Schnakenberg's work and hitherto can be carried out when for each transition ...
Busiello, D. M., Gupta, D., Maritan, A.
core   +2 more sources

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