Condensation versus ordering: From the spherical models to Bose-Einstein condensation in the canonical and grand canonical ensemble

In this paper, we take a fresh look at the long-standing issue of the nature of macroscopic density fluctuations in the grand canonical treatment of the Bose-Einstein condensation (BEC). Exploiting the close analogy between the spherical and mean-spherical models of magnetism with the canonical and...

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Bibliographic Details
Main Authors: A. Crisanti, A. Sarracino, M. Zannetti
Format: Article
Language:English
Published: American Physical Society 2019-09-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.1.023022