Results 21 to 30 of about 69,539 (295)

Entropy Maximization, Time Emergence, and Phase Transition [PDF]

open access: yesEntropy
We 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
doaj   +2 more sources

Entropy Production and Thermodynamic Arrow of Time in a Recollapsing Universe

open access: green, 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
  +6 more sources

Modeling Time’s Arrow

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   +4 more sources

Influence of Thermodynamic Arrow of Time on Entropy

open access: bronzePhysical Science International Journal, 2023
This study assessed the influence of thermodynamic arrow of time on entropy for boiled cooling water (physical process), the universe and the air (natural process). This was done by determining the entropies of boiled water, the universe and air. This was achieved by using 1.5 litres of pure water, a 2 liter electric kettle, a digital thermometer, a ...
Opio Peter, Akullo Lydia, Bwayo Edward
openalex   +3 more sources

Unified Framework of the Arrow of Time and Entropy Flow in Rigid Fractal Structures

open access: bronze
This paper proposes a novel model of the nature of time, positing that time is a dynamic manifestation embedded within rigid fractal geometry. Based on this model, the directionality of time (the arrow of time) and the flow of entropy (the second law of thermodynamics) are unified as natural outcomes of recursive dynamics in fractal geometry.
changzheng zhou, ZIQING zhou
openalex   +3 more sources

From Randomness and Entropy to the Arrow of Time

open access: green
The Element reconstructs, analyses and compares different derivational routes to a grounding of the Arrow of Time in entropy. It also evaluates the link between entropy and visible disorder, and the related claim of an alignment of the Arrow of Time with a development from order to visible disorder.
Lena Zuchowski
openalex   +3 more sources

Is Time’s Asymmetry Related to Irreversible Processes and the Second Law?

open access: yesEntropy, 2023
In this article, we start by describing one of the most characteristic properties of time: “time can never decrease”. From this property, numerous authors have concluded that irreversible processes, that always proceed in one direction, must be related ...
Arieh Ben-Naim
doaj   +1 more source

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   +1 more source

Causality Is an Effect, II

open access: yesEntropy, 2021
Causality follows the thermodynamic arrow of time, where the latter is defined by the direction of entropy increase. After a brief review of an earlier version of this article, rooted in classical mechanics, we give a quantum generalization of the ...
Lawrence S. Schulman
doaj   +1 more source

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