Strongly Interacting Multi-component Fermions: From Ultracold Atomic Fermi Gas to Asymmetric Nuclear Matter in Neutron Stars

Hiroyuki Tajima, Tetsuo Hatsuda, Yoji Ohashi

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We investigate an asymmetric nuclear matter consisting of protons and neutrons with spin degrees of freedom (σ = ↑, ↓). By generalizing the Nozières and Schmitt-Rink theory for two-component Fermi gases to the four-component case, we analyze the critical temperature T c of the superfluid phase transition. Although the pure neutron matter exhibits the dineutron condensation in the low-density region, the superfluid instability toward the deuteron condensation is found to take place as the proton fraction increases. We clarify the mechanism of the competition between the deuteron condensation and dineutron condensation. Our results would serve for understanding the properties of asymmetric nuclear matter realized in the interior of neutron stars.

Original languageEnglish
Article number012003
JournalJournal of Physics: Conference Series
Volume969
Issue number1
DOIs
Publication statusPublished - 2018 Apr 19
Event28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden
Duration: 2017 Aug 92017 Aug 16

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neutron stars
condensation
fermions
gases
deuterons
neutrons
protons
critical temperature
degrees of freedom

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Strongly Interacting Multi-component Fermions : From Ultracold Atomic Fermi Gas to Asymmetric Nuclear Matter in Neutron Stars. / Tajima, Hiroyuki; Hatsuda, Tetsuo; Ohashi, Yoji.

In: Journal of Physics: Conference Series, Vol. 969, No. 1, 012003, 19.04.2018.

Research output: Contribution to journalConference article

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