Renormalization Group Theory for the Imbalanced Fermi Gas

Abstract

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)].

Replaced with published version

References in corpus (5)

• Phase diagram of a two-component Fermi gas with resonant interactions
• Normal state of a polarized Fermi gas at unitarity
• Deformation of a Trapped Fermi Gas with Unequal Spin Populations
• Large-N expansion for unitary superfluid Fermi gases
• Flow Equations for the BCS-BEC Crossover

Cited by in corpus (5)

• Particle-hole fluctuations in the BCS-BEC Crossover
• Renormalization of the BCS-BEC crossover by order parameter fluctuations
• Critical Behaviour in Trapped Strongly Interacting Fermi Gases
• Normal-Superfluid Interface for Polarized Fermion Gases
• Monte Carlo studies of extensions of the Blume-Emery-Griffiths model