Object

Title: First Principles of the Classical Mechanics and the Foundations of Statistical Mechanics on the Example of a Disordered Spin System

Co-author(s) :

Sahakyan V. V.

Abstract:

We study the classical multicomponent disordered 3D spin system taking into account the temperature of the medium in the framework of the model of nearest neighbors. The latter allows the 3D problem with a cubic lattice to reduce to the 1D Heisenberg spin glass problem with a random environment. Using the Hamilton equations of motion, a recurrent equation is obtained that connects three spins in successive nodes of 1D lattice, taking into account the influence of a random environment. This equation, together with the corresponding conditions of a local minimum energy in nodes, allows to construct node-by-node a stable spin chains and, accordingly, to calculate all parameters of statistical ensemble from the first principles of classical mechanics, without using any additional assumptions, in particular, the main axiom of statistical mechanics – the equiprobability of statistical states. Using the example of 1D Heisenberg spin glass model, the features of the new approach are studied in detail and the statistical mechanics of the system are constructed without using the standard representation of the partition function (PF).

Publisher:

Springer

Date submitted:

12 September 2019

Date accepted:

10 February 2020

Date modified:

18 January 2020

Date of publication:

03 December 2020

Identifier:

oai:noad.sci.am:136092

DOI:

10.3103/S106833722004009X

Language:

English

Journal or Publication Title:

Journal of Contemporary Physics

Volume:

55

Number:

4

URL:


Affiliation:

Institute for Informatics and Automation Problems, NAS of Armenia, Yerevan, Armenia ; Institute of Chemical Physics, NAS of Armenia, Yerevan, Armenia

Year:

2020

References:

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Last modified:

Apr 23, 2021

In our library since:

Apr 15, 2021

Number of object content hits:

8

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https://noad.sci.am/publication/149751

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