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Magnetic Transitions and Condensation in a Bose-Gas

Magnetic Transitions and Condensation in a Bose-Gas Magnetic transitions and Bose–Einstein condensation (BEC) are studied in a self-consistent field model, analogous to the model of a molecular field in the theory of ferromagnetism. It is shown that the present model is internally consistent and suitable for description at any value of a dimensionless parameter characterizing the system. Different possible types of phase transitions, at which magnetization and BEC density emerge either continuously or discontinuously, are considered. Critical values of the phenomenological parameter, at which the character of phase transitions changes, are calculated. The phase diagram in temperature–particle number density coordinates is plotted. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Magnetic Transitions and Condensation in a Bose-Gas

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References (6)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/s10909-015-1298-6
Publisher site
See Article on Publisher Site

Abstract

Magnetic transitions and Bose–Einstein condensation (BEC) are studied in a self-consistent field model, analogous to the model of a molecular field in the theory of ferromagnetism. It is shown that the present model is internally consistent and suitable for description at any value of a dimensionless parameter characterizing the system. Different possible types of phase transitions, at which magnetization and BEC density emerge either continuously or discontinuously, are considered. Critical values of the phenomenological parameter, at which the character of phase transitions changes, are calculated. The phase diagram in temperature–particle number density coordinates is plotted.

Journal

Journal of Low Temperature Physics – Springer Journals

Published: Apr 21, 2015

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