Tan's universal contact and collective oscillations of strongly interacting Fermi gases

Mark DelloStritto, Theja Nilantha DeSilva

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We study strongly interacting two component Fermi gas near a Feshbach resonance. By using a ground state energy functional constructed based on asymptotic limits and Monte Carlo calculations, we calculate the contact, structure factor, and collective oscillation frequencies in the BCS-BEC crossover region. The calculated contact and structure factor show excellent agreements with recent experiments. We compare these results with a standard mean-field theory and find that the contact is proportional to the square of superfluid order parameter. Further, we present the chemical potential and the polytropic index in terms of homogeneous energy and the contact.

Original languageEnglish (US)
Pages (from-to)2298-2305
Number of pages8
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume376
Issue number34
DOIs
StatePublished - Jul 9 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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