Isothermal compressibility determination across Bose-Einstein condensation

We apply the global thermodynamic variables approach to experimentally determine the isothermal compressibility parameter \(\kappa_T\) of a trapped Bose gas across the phase transition. We demonstrate the behavior of \(\kappa_T\) around the critical pressure, revealing the second order nature of the...

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Bibliographic Details
Published inarXiv.org
Main Authors Poveda-Cuevas, F J, Castilho, P C M, Mercado-Gutierrez, E D, Fritsch, A R, Muniz, S R, Lucioni, E, Roati, G, Bagnato, V S
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 17.07.2016
Subjects
Compressibility
Critical pressure
Phase transitions
Physics - Quantum Gases
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Summary:We apply the global thermodynamic variables approach to experimentally determine the isothermal compressibility parameter \(\kappa_T\) of a trapped Bose gas across the phase transition. We demonstrate the behavior of \(\kappa_T\) around the critical pressure, revealing the second order nature of the phase transition. Compressibility is the most important susceptibility to characterize the system. The use of global variables shows advantages with respect to the usual local density approximation method and can be applied to a broad range of situations.
ISSN:2331-8422
DOI:10.48550/arxiv.1607.04897