Results 21 to 30 of about 147,800 (333)

Disorder-induced quantum-to-classical transition, or how the world becomes classical [PDF]

open access: yesEPJ Web of Conferences, 2022
Decoherence theory explains how quantum mechanics gives rise to classical mechanics through the entanglement of a quantum system’s evolution with the degrees of freedom of the environment.
Bringuier Eric
doaj   +1 more source

Hybrid classical-quantum computing: Applications to statistical mechanics of financial markets [PDF]

open access: yesE3S Web of Conferences, 2021
Hybrid Classical-Quantum computing is now offered by several commercial quantum computers. In this project, a model of financial options, Statistical Mechanics of Financial Markets (SMFM), uses this approach. However, only Classical (super-)computers are
Ingber Lester
doaj   +1 more source

Quantum–Classical Mechanics: Statistical Approach to Molecular Collisions

open access: yesComputer Sciences & Mathematics Forum, 2023
The chaotic dynamics of the transient state in molecular and physicochemical transitions in quantum–classical mechanics is considered in relation to the problem of redistribution of the vibrational–rotational energy of polyatomic molecules M and M1 in ...
Vladimir V. Egorov
doaj   +1 more source

A simple second order thermodynamic perturbation theory for associating fluids

open access: yesCondensed Matter Physics, 2021
An approximation within Wertheim's second order perturbation theory is proposed which allows for the development of a general solution for pure component fluids with an arbitrary number and functionality of association sites.
B. D. Marshall
doaj   +1 more source

Contextuality in Classical Physics and Its Impact on the Foundations of Quantum Mechanics

open access: yesEntropy, 2021
It is shown that the hallmark quantum phenomenon of contextuality is present in classical statistical mechanics (CSM). It is first shown that the occurrence of contextuality is equivalent to there being observables that can differentiate between pure and
Fritiof Wallentin
doaj   +1 more source

The functional mechanics: evolution of the moments of distribution function and the poincare recurrence theorem

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
One of modern approaches to a problem of the coordination of classical mechanics and the statistical physics - the functional mechanics is considered.
Andrey I Mikhailov
doaj   +3 more sources

Phase Space Cell in Nonextensive Classical Systems

open access: yesEntropy, 2003
: We calculate the phase space volume Ω occupied by a nonextensive system of N classical particles described by an equilibrium (or steady-state, or long-term stationary state of a nonequilibrium system) distribution function, which slightly deviates ...
Piero Quarati, Francesco Quarati
doaj   +1 more source

A symplectic integrator for molecular dynamics on a hypersphere

open access: yesCondensed Matter Physics, 2020
We present a reversible and symplectic algorithm called ROLL, for integrating the equations of motion in molecular dynamics simulations of simple fluids on a hypersphere Sd of arbitrary dimension d. It is derived in the framework of geometric algebra and
J.-M. Caillol
doaj   +1 more source

Colloquium : Statistical mechanics and thermodynamics at strong coupling: Quantum and classical [PDF]

open access: yes, 2019
The question of how classical systems approach thermal equilibrium is as old as the foundations of thermodynamics and statistical mechanics. How quantum systems decohere and thermalize is even more puzzling. This Colloquium provides an account of how the
P. Talkner, P. Hänggi
semanticscholar   +1 more source

The Phase Space Elementary Cell in Classical and Generalized Statistics

open access: yesEntropy, 2013
In the past, the phase-space elementary cell of a non-quantized system was set equal to the third power of the Planck constant; in fact, it is not a necessary assumption. We discuss how the phase space volume, the number of states and the elementary-cell
Piero Quarati, Marcello Lissia
doaj   +1 more source

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