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High Energy Physics - Phenomenology

arXiv:hep-ph/0504083 (hep-ph)
[Submitted on 12 Apr 2005 (v1), last revised 27 Nov 2005 (this version, v3)]

Title:BCS-BEC crossover in a relativistic superfluid and its significance to quark matter

Authors:Yusuke Nishida, Hiroaki Abuki
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Abstract: The character change of a superfluid state due to the variation of the attractive force is investigated in the relativistic framework with a massive fermion. Two crossovers are found. One is a crossover from the usual BCS state to the Bose-Einstein condensation (BEC) of bound fermion pairs. The other is from the BEC to the relativistic Bose-Einstein condensation (RBEC) of nearly massless bound pairs where antiparticles as well as particles dominate the thermodynamics. Possible realization of the BEC and RBEC states in the quark matter is also pointed out.
Comments: 5 pages, 1 figure, revtex4; (v2) text has been clarified, references updated; (v3) final version to appear in Phys. Rev. D
Subjects: High Energy Physics - Phenomenology (hep-ph); Superconductivity (cond-mat.supr-con); Nuclear Theory (nucl-th)
Cite as: arXiv:hep-ph/0504083
  (or arXiv:hep-ph/0504083v3 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0504083
Journal reference: Phys.Rev. D72 (2005) 096004
Related DOI: https://doi.org/10.1103/PhysRevD.72.096004

Submission history

From: Yusuke Nishida [view email]
[v1] Tue, 12 Apr 2005 12:56:22 UTC (60 KB)
[v2] Tue, 20 Sep 2005 08:55:57 UTC (40 KB)
[v3] Sun, 27 Nov 2005 21:54:48 UTC (40 KB)
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