RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

Adiabatic Phase Diagram of an Ultracold Atomic Fermi Gas with a Feshbach Resonance

TitleAdiabatic Phase Diagram of an Ultracold Atomic Fermi Gas with a Feshbach Resonance
Publication TypeJournal Article
Year of Publication2007
AuthorsS. Watabe, T. Nikuni, N. Nygaard, J. E. Williams, and C. W. Clark
JournalJ. Phys. Soc. Jpn.
Volume76
Pagination064003
Date Publishedmay
ISSN0031-9015
Keywords2007, Single Fellow
Abstract

We determine the adiabatic phase diagram of a resonantly-coupled system of Fermi atoms and Bose molecules confined in the harmonic trap by using the local density approximation. The adiabatic phase diagram shows the fermionic condensate fraction composed of condensed molecules and Cooper pair atoms. The key idea of our work is conservation of entropy through the adiabatic process, extending the study of Williams et al. [Williams et al., New J. Phys. 6, 123 (2004)] for an ideal gas mixture to include the resonant interaction in a mean-field theory. We also calculate the molecular conversion efficiency as a function of initial temperature. Our work helps to understand recent experiments on the BCS-BEC crossover, in terms of the initial temperature measured before a sweep of the magnetic field.

URLhttp://arxiv.org/abs/cond-mat/0610079
DOI10.1143/JPSJ.76.064003

Subscribe to A Quantum Bit 

Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...

Sign Up Now

Sign up to receive A Quantum Bit in your email!

 Have an idea for A Quantum Bit? Submit your suggestions to jqi-comm@umd.edu