Specific heat and effects of strong pairing fluctuations in a superfluid Fermi atom gas in the BCS-BEC crossover region

Pieter Van Wyk, Daisuke Inotani, Yoji Ohashi

研究成果: Conference article

抄録

We theoretically investigate the specific heat at constant volume C V in the BCS(Bardeen-Cooper-Schrieffer)-BEC(Bose-Einstein-condensation)-crossover regime of an ultracold Fermi gas, below the superfluid phase transition temperature T c. Within the strong-coupling framework developed by Nozières and Schmitt-Rink, we show that the temperature dependence of C V drastically changes as one passes through the crossover region, and is sensitive to strong fluctuations in the Cooper channel near the unitarity limit. We also compare our results to a recent experiment on a 6Li unitary Fermi gas. Since fluctuation effects are a crucial key in the BCS-BEC-crossover phenomenon, our results would be helpful in considering how the fermionic BCS superfluid changes into BEC with increasing the interaction strength, from the viewpoint of specific heat.

本文言語English
論文番号012013
ジャーナルJournal of Physics: Conference Series
969
1
DOI
出版ステータスPublished - 2018 4 19
イベント28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden
継続期間: 2017 8 92017 8 16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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