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arXiv · 1905.09567

Condensation of interacting scalar bosons at finite temperatures

I. N. Mishustin·D. V. Anchishkin·L. M. Satarov·O. S. Stashko·H. Stoecker
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Abstract

Thermodynamical properties of an interacting system of scalar bosons at finite temperatures are studied within the framework of a field-theoretical model containing the attractive and repulsive self-interaction terms. Self-consistency relations between the effective mass and thermodynamic functions are derived in the mean-field approximation. We show that for a sufficiently strong attractive interaction a first-order phase transition develops in the system via the formation of a scalar condensate. An interesting prediction of this model is that the condensed phase appears within a finite temperature interval and is characterized by a constant scalar density of Bose particles.

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I. N. Mishustin, D. V. Anchishkin, L. M. Satarov, O. S. Stashko, H. Stoecker. 2019-07-12. Condensation of interacting scalar bosons at finite temperatures. https://doi.org/10.1103/physrevc.100.022201

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