Renormalization Group Theory for the Imbalanced Fermi Gas

Details Renormalization Group Theory for the Imbalanced Fermi Gas Renormalization Group Theory for the Imbalanced Fermi Gas

2007-11-19

arxiv.org/abs/0711.2963v4

Phys. Rev. Lett. 100, 140407 (2008)

Physics

Condensed Matter

Statistical Mechanics

Replaced with published version

Scientific paper

10.1103/PhysRevLett.100.140407

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) limit. 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 {\it et al}. [Nature {\bf 451}, 689 (2008)].

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