Renormalization Group Theory for the Imbalanced Fermi Gas

Journal Article · Fri Apr 11 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.140407· OSTI ID:21123844

Gubbels, K B; Stoof, H T. C. ^[1]

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1. Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht (Netherlands)

We formulate a Wilsonian renormalization group theory for the imbalanced Fermi gas. The theory is able to recover quantitatively well-established results in both the weak-coupling and the strong-coupling (unitarity) limits. We determine for the latter case the line of second-order phase transitions of the imbalanced Fermi gas and, in particular, the location of the tricritical point. We obtain good agreement with the recent experiments of Y. Shin et al. [Nature (London) 451, 689 (2008)].

• OSTI ID: 21123844
• Journal Information: Physical Review Letters, Vol. 100, Issue 14; Other Information: DOI: 10.1103/PhysRevLett.100.140407; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FERMI GAS
GROUP THEORY
PHASE TRANSFORMATIONS
RENORMALIZATION
STRONG-COUPLING MODEL
UNITARITY