Results 21 to 30 of about 11,647 (256)

Local normality in Quantum Statistical Mechanics [PDF]

open access: yesCommunications in Mathematical Physics, 1973
It is shown that K.M.S.-states are locally normal on a great number ofC*-algebras that may be of interest in Quantum Statistical Mechanics. The lattice structure and the Choquet-simplex structure of various sets of states are investigated. In this respect special attention is payed to the interplay of the K.M.S.-automorphism group with other ...
Takesaki, Masamichi, Winnink, Marinus
openaire   +3 more sources

Entropy of Quantum States

open access: yesEntropy, 2021
Given the algebra of observables of a quantum system subject to selection rules, a state can be represented by different density matrices. As a result, different von Neumann entropies can be associated with the same state.
Paolo Facchi   +2 more
doaj   +1 more source

Heat-exchange statistics in driven open quantum systems

open access: yesNew Journal of Physics, 2014
As the dimensions of physical systems approach the nanoscale, the laws of thermodynamics must be reconsidered due to the increased importance of fluctuations and quantum effects.
S Gasparinetti   +3 more
doaj   +1 more source

Probability, Entropy, and Gibbs’ Paradox(es)

open access: yesEntropy, 2018
Two distinct puzzles, which are both known as Gibbs’ paradox, have interested physicists since they were first identified in the 1870s. They each have significance for the foundations of statistical mechanics and have led to lively discussions with
Robert H. Swendsen
doaj   +1 more source

Statistical origin of quantum mechanics [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2002
The one particle quantum mechanics is considered in the frame of a N-body classical kinetics in the phase space. Within this framework, the scenario of a subquantum structure for the quantum particle, emerges naturally, providing an ontological support to the orthodox quantum mechanics.
openaire   +3 more sources

Analysis of contribution of matrix mechanics on quantum mechanics [PDF]

open access: yesEPJ Web of Conferences
In this paper the analysis and discussion about the contribution made by matrix mechanics, i.e. the establishment of complex form of quantum mechanics and the proposal of mathematic formalism of uncertainty principle, to the development of quantum ...
Ren Zhi
doaj   +1 more source

The Statistical Origins of Quantum Mechanics [PDF]

open access: yesPhysics Research International, 2010
It is shown that Schrödinger's equation may be derived from three postulates. The first is a kind of statistical metamorphosis of classical mechanics, a set of two relations which are obtained from the canonical equations of particle mechanics by replacing all observables by statistical averages.
openaire   +2 more sources

Aspects of Quantum Statistical Mechanics: Fractional and Tsallis Approaches

open access: yesMathematics, 2023
We investigated two different approaches, which can be used to extend the standard quantum statistical mechanics. One is based on fractional calculus, and the other considers the extension of the concept of entropy, i.e., the Tsallis statistics.
Ervin Kaminski Lenzi   +2 more
doaj   +1 more source

Typical = Random

open access: yesAxioms, 2023
This expository paper advocates an approach to physics in which “typicality” is identified with a suitable form of algorithmic randomness. To this end various theorems from mathematics and physics are reviewed.
Klaas Landsman
doaj   +1 more source

Gibbsing spacetime: a group field theory approach to equilibrium in quantum gravity

open access: yesNew Journal of Physics, 2018
The symmetries, subtle nature of observables, and lack of a preferred notion of time evolution all make defining a quantum statistical mechanics of general relativity difficult.
Hal M Haggard
doaj   +1 more source

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