Results 31 to 40 of about 56,484 (222)

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 ...
D. M. Busiello, D. Gupta, A. Maritan
doaj   +2 more sources

The maximum entropy ansatz in the absence of a time arrow: fractional pole models

open access: green, 2006
The maximum entropy ansatz, as it is often invoked in the context of time-series analysis, suggests the selection of a power spectrum which is consistent with autocorrelation data and corresponds to a random process least predictable from past ...
Georgiou, Tryphon T.
core   +3 more sources

Arrow of time: Metaphorical construals of entropy and the second law of thermodynamics

open access: green, 2012
Various features of scientific discourse have been characterized in the science education literature, and challenges students face in appropriating these features have been explored.
Tamer G. Amin   +3 more
openalex   +3 more sources

Arrow(s) of Time without a Past Hypothesis [PDF]

open access: yes, 2019
The paper discusses recent proposals by Carroll and Chen, as well as Barbour, Koslowski, and Mercati to explain the (thermodynamic) arrow of time without a Past Hypothesis, i.e., the assumption of a special (low-entropy) initial state of the universe ...
Lazarovici, Dustin, Reichert, Paula
core   +7 more sources

Thermodynamics of quantum measurement and Maxwell's demon's arrow of time [PDF]

open access: yesPhysical Review A, 2022
We discuss the thermodynamic aspects of a single qubit based device, powered by weak quantum measurements, and feedback controlled by a quantum Maxwell’s demon.
Kagan Yanik   +3 more
semanticscholar   +1 more source

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

Decomposing the Local Arrow of Time in Interacting Systems. [PDF]

open access: yesPhysical Review Letters, 2021
We show that the evidence for a local arrow of time, which is equivalent to the entropy production in thermodynamic systems, can be decomposed. In a system with many degrees of freedom, there is a term that arises from the irreversible dynamics of the ...
Christopher W. Lynn   +3 more
semanticscholar   +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

On Quantum Entropy

open access: yesEntropy, 2022
Quantum physics, despite its intrinsically probabilistic nature, lacks a definition of entropy fully accounting for the randomness of a quantum state. For example, von Neumann entropy quantifies only the incomplete specification of a quantum state and ...
Davi Geiger, Zvi M. Kedem
doaj   +1 more source

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