Specific heat and effects of uniaxial anisotropy of a p-wave pairing interaction in a strongly interacting ultracold fermi gas

Daisuke Inotani, Pieter Van Wyk, Yoji Ohashi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We investigate the specific heat CVat constant volume and effects of uniaxial anisotropy of a p-wave attractive interaction in the normal state of an ultracold Fermi gas. Within the framework of the strong-coupling theory developed by Nozières and Schmitt-Rink, we evaluate this thermodynamic quantity as a function of temperature, in the whole interaction regime. While the uniaxial anisotropy is not crucial for CVin the weak-coupling regime, CVis found to be sensitive to the uniaxial anisotropy in the strong-coupling regime. This originates from the population imbalance among pi-wave molecules (i = x; y; z), indicating that the specific heat is a useful observable to see which kinds of p-wave molecules dominantly exist in the strong-coupling regime when the p-wave interaction has uniaxial anisotropy. Using this strong point, we classify the strong-coupling regime into some characteristic regions. Since a p-wave pairing interaction with uniaxial anisotropy has been discovered in a 40K Fermi gas, our results would be useful in considering strong-coupling properties of a p-wave interacting Fermi gas, when the interaction is uniaxially anisotropic.

Original languageEnglish
Article number044301
JournalJournal of the Physical Society of Japan
Volume86
Issue number4
DOIs
Publication statusPublished - 2017 Apr 15

Fingerprint

wave interaction
specific heat
anisotropy
gases
molecules
interactions
thermodynamics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Specific heat and effects of uniaxial anisotropy of a p-wave pairing interaction in a strongly interacting ultracold fermi gas. / Inotani, Daisuke; Wyk, Pieter Van; Ohashi, Yoji.

In: Journal of the Physical Society of Japan, Vol. 86, No. 4, 044301, 15.04.2017.

Research output: Contribution to journalArticle

@article{6c395403692548a08117bca4ce0eb6a6,
title = "Specific heat and effects of uniaxial anisotropy of a p-wave pairing interaction in a strongly interacting ultracold fermi gas",
abstract = "We investigate the specific heat CVat constant volume and effects of uniaxial anisotropy of a p-wave attractive interaction in the normal state of an ultracold Fermi gas. Within the framework of the strong-coupling theory developed by Nozi{\`e}res and Schmitt-Rink, we evaluate this thermodynamic quantity as a function of temperature, in the whole interaction regime. While the uniaxial anisotropy is not crucial for CVin the weak-coupling regime, CVis found to be sensitive to the uniaxial anisotropy in the strong-coupling regime. This originates from the population imbalance among pi-wave molecules (i = x; y; z), indicating that the specific heat is a useful observable to see which kinds of p-wave molecules dominantly exist in the strong-coupling regime when the p-wave interaction has uniaxial anisotropy. Using this strong point, we classify the strong-coupling regime into some characteristic regions. Since a p-wave pairing interaction with uniaxial anisotropy has been discovered in a 40K Fermi gas, our results would be useful in considering strong-coupling properties of a p-wave interacting Fermi gas, when the interaction is uniaxially anisotropic.",
author = "Daisuke Inotani and Wyk, {Pieter Van} and Yoji Ohashi",
year = "2017",
month = "4",
day = "15",
doi = "10.7566/JPSJ.86.044301",
language = "English",
volume = "86",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "4",

}

TY - JOUR

T1 - Specific heat and effects of uniaxial anisotropy of a p-wave pairing interaction in a strongly interacting ultracold fermi gas

AU - Inotani, Daisuke

AU - Wyk, Pieter Van

AU - Ohashi, Yoji

PY - 2017/4/15

Y1 - 2017/4/15

N2 - We investigate the specific heat CVat constant volume and effects of uniaxial anisotropy of a p-wave attractive interaction in the normal state of an ultracold Fermi gas. Within the framework of the strong-coupling theory developed by Nozières and Schmitt-Rink, we evaluate this thermodynamic quantity as a function of temperature, in the whole interaction regime. While the uniaxial anisotropy is not crucial for CVin the weak-coupling regime, CVis found to be sensitive to the uniaxial anisotropy in the strong-coupling regime. This originates from the population imbalance among pi-wave molecules (i = x; y; z), indicating that the specific heat is a useful observable to see which kinds of p-wave molecules dominantly exist in the strong-coupling regime when the p-wave interaction has uniaxial anisotropy. Using this strong point, we classify the strong-coupling regime into some characteristic regions. Since a p-wave pairing interaction with uniaxial anisotropy has been discovered in a 40K Fermi gas, our results would be useful in considering strong-coupling properties of a p-wave interacting Fermi gas, when the interaction is uniaxially anisotropic.

AB - We investigate the specific heat CVat constant volume and effects of uniaxial anisotropy of a p-wave attractive interaction in the normal state of an ultracold Fermi gas. Within the framework of the strong-coupling theory developed by Nozières and Schmitt-Rink, we evaluate this thermodynamic quantity as a function of temperature, in the whole interaction regime. While the uniaxial anisotropy is not crucial for CVin the weak-coupling regime, CVis found to be sensitive to the uniaxial anisotropy in the strong-coupling regime. This originates from the population imbalance among pi-wave molecules (i = x; y; z), indicating that the specific heat is a useful observable to see which kinds of p-wave molecules dominantly exist in the strong-coupling regime when the p-wave interaction has uniaxial anisotropy. Using this strong point, we classify the strong-coupling regime into some characteristic regions. Since a p-wave pairing interaction with uniaxial anisotropy has been discovered in a 40K Fermi gas, our results would be useful in considering strong-coupling properties of a p-wave interacting Fermi gas, when the interaction is uniaxially anisotropic.

UR - http://www.scopus.com/inward/record.url?scp=85017421002&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017421002&partnerID=8YFLogxK

U2 - 10.7566/JPSJ.86.044301

DO - 10.7566/JPSJ.86.044301

M3 - Article

AN - SCOPUS:85017421002

VL - 86

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 4

M1 - 044301

ER -