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Volumn 70, Issue 9, 2004, Pages

BCS-BEC crossover at finite temperature in the broken-symmetry phase

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; BOSON; CONTROLLED STUDY; ENERGY; FERMION; MATHEMATICAL MODEL; POLYMERIZATION; QUANTUM MECHANICS; SUPERCONDUCTOR; TEMPERATURE DEPENDENCE;

EID: 19744381979     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.094508     Document Type: Article
Times cited : (166)

References (61)
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    • note
    • 2/4=0 for |q| < √8mμ when μ>0. Note also that the Bogoliubov-Anderson mode (full line) terminates at |ω|=2Δ in the upper panel of Fig. 7, while it remains below the particle-particle continuum (dashed lines) in the middle and lower panels of Fig. 7.
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    • note
    • 0(T=0)=n for all couplings. More generally for any coupling, in our theory (quantum) fluctuation corrections to mean-field quantities survive even at T=0 while in the theory of Ref. 19 fluctuation corrections vanish identically at T=0.
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    • note
    • R(k, ω). This is the case for the "anomalous" retarded and advanced Green's functions resulting from the approximate expression (36) of the text with a real order parameter Δ.


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