Two-dimensional pseudogap effects of an ultracold fermi gas in the BCS-BEC crossover region

R. Watanabe, S. Tsuchiya, Y. Ohashi

研究成果: Article査読

抄録

We investigate pseudogap phenomena originating from pairing fluctuations in the BCS-BEC crossover regime of a two-dimensional Fermi gas in a harmonic trap. Including pairing fluctuations within a T -matrix theory and effects of a trap within the local density approximation, we calculate the local density of states (LDOS) at the superfluid phase transition temperature Tc. In the weak-coupling regime, we show that the pseudogap already appears in LDOS around the trap center. The spatial region where the pseudogap can be seen in LDOS becomes wider for a strong pairing interaction. We also discuss how the pseudogap affects the spectrum of the photoemission-type experiment developed by JILA group.

本文言語English
ページ(範囲)341-347
ページ数7
ジャーナルJournal of Low Temperature Physics
171
3-4
DOI
出版ステータスPublished - 2013 5月

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 凝縮系物理学

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