Pairing and superfluid properties of dilute fermion gases at unitarity

Vamsi K. Akkineni, D. M. Ceperley, Nandini Trivedi

Research output: Contribution to journalArticlepeer-review

Abstract

We study the system of a dilute gas of fermions in three dimensions, with attractive interactions tuned to the unitarity point, using the nonperturbative restricted path-integral Monte Carlo method. The pairing and superfluid properties of this system are calculated at finite temperature. The total energy at very low temperature from our results agrees closely with that of previous ground-state quantum Monte Carlo calculations. We identify the temperature T* ≈0.70 F, below which pairing correlations develop, and estimate the critical temperature for the superfluid transition Tc ≈0.245 F from a finite size scaling analysis of the superfluid density.

Original languageEnglish (US)
Article number165116
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number16
DOIs
StatePublished - Oct 16 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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