Theory of photoemission-type experiment in the BCS-BEC crossover regime of a superfluid Fermi gas

Ryota Watanabe, Shunji Tsuchiya, Yoji Ohashi

研究成果: Conference contribution

抄録

We theoretically investigate the recent photoemission-type experiment on 40K Fermi gases done by JILA group. Including pairing fluctuations within a strong-coupling T-matrix theory, as well as effects of a harmonic trap within the local density approximation, we calculate photoemission spectra in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover region. We show that the energy resolution of the current photoemission experiment is enough to detect the pseudogap phenomenon. We also show how the pseudogap in single-particle excitations continuously changes into the superfluid gap, as one decreases the temperature below the superfluid phase transition temperature. Our results would be useful for the study of single-particle properties of ultracold Fermi gases in the BCS-BEC crossover.

本文言語English
ホスト出版物のタイトルProceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011
ページ26-31
ページ数6
DOI
出版ステータスPublished - 2011
イベント2011 1st International Symposium on Access Spaces, ISAS 2011 - Yokohama, Japan
継続期間: 2011 6月 172011 6月 19

出版物シリーズ

名前Proceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011

Other

Other2011 1st International Symposium on Access Spaces, ISAS 2011
国/地域Japan
CityYokohama
Period11/6/1711/6/19

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学

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