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 language | English |
|---|---|
| Article number | 044301 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 86 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2017 Apr 15 |
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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 journal › Article
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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.
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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 -