Pseudogap phenomenon in an ultracold Fermi gas with a p-wave interaction

Daisuke Inotani, Ryota Watanabe, Manfred Sigrist, Yoji Ohashi

研究成果: Conference contribution

抄録

We investigate fluctuation effects in a single-component ultracold Fermi gas with a p-wave interaction. Within the framework of a strong-coupling T-matrix theory, we calculate the single-particle density of states (DOS) at the superfluid phase transition temperature Tc. Starting from the weak-coupling regime, we show that the so-called pseudogap structure develops in DOS, with increasing the strength of a pairing interaction. However, in contrast to the case of s-wave interaction (where the pseudogap size in DOS monotonically increases with increasing the interaction strength), the pseudogap structure is found to gradually disappear in the strong-coupling regime. We point out that this non-monotonic behavior of pseudogap originates from the momentum dependence of p-wave interaction. Our results clarify how the symmetry of pairing interaction affects pseudogap phenomena in strongly correlated fermion systems.

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23-25
ページ数3
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 172011 6 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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