Abstract
We theoretically investigate normal-state properties of a unitary Bose–Fermi mixture. Including strong hetero-pairing fluctuations, we evaluate the Bose and Fermi chemical potential, internal energy, pressure, entropy, as well as specific heat at constant volume CV, within the framework of a combined strong-coupling theory with exact thermodynamic identities. We show that hetero-pairing fluctuations at the unitarity cause non-monotonic temperature dependence of CV, being qualitatively different from the monotonic behavior of this quantity in the weak- and strong-coupling limit. On the other hand, such an anomalous behavior is not seen in the other quantities. Our results indicate that the specific heat CV, which has recently become observable in cold atom physics, is a useful quantity for understanding strong-coupling aspects of this quantum system.
| Original language | English |
|---|---|
| Article number | 074302 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 86 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2017 Jul 15 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Normal-state properties of a unitary Bose–Fermi mixture : A combined strong-coupling approach with universal thermodynamics. / Kharga, Digvijay; Tajima, Hiroyuki; Van Wyk, Pieter; Inotani, Daisuke; Ohashi, Yoji.
In: Journal of the Physical Society of Japan, Vol. 86, No. 7, 074302, 15.07.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Normal-state properties of a unitary Bose–Fermi mixture
T2 - A combined strong-coupling approach with universal thermodynamics
AU - Kharga, Digvijay
AU - Tajima, Hiroyuki
AU - Van Wyk, Pieter
AU - Inotani, Daisuke
AU - Ohashi, Yoji
PY - 2017/7/15
Y1 - 2017/7/15
N2 - We theoretically investigate normal-state properties of a unitary Bose–Fermi mixture. Including strong hetero-pairing fluctuations, we evaluate the Bose and Fermi chemical potential, internal energy, pressure, entropy, as well as specific heat at constant volume CV, within the framework of a combined strong-coupling theory with exact thermodynamic identities. We show that hetero-pairing fluctuations at the unitarity cause non-monotonic temperature dependence of CV, being qualitatively different from the monotonic behavior of this quantity in the weak- and strong-coupling limit. On the other hand, such an anomalous behavior is not seen in the other quantities. Our results indicate that the specific heat CV, which has recently become observable in cold atom physics, is a useful quantity for understanding strong-coupling aspects of this quantum system.
AB - We theoretically investigate normal-state properties of a unitary Bose–Fermi mixture. Including strong hetero-pairing fluctuations, we evaluate the Bose and Fermi chemical potential, internal energy, pressure, entropy, as well as specific heat at constant volume CV, within the framework of a combined strong-coupling theory with exact thermodynamic identities. We show that hetero-pairing fluctuations at the unitarity cause non-monotonic temperature dependence of CV, being qualitatively different from the monotonic behavior of this quantity in the weak- and strong-coupling limit. On the other hand, such an anomalous behavior is not seen in the other quantities. Our results indicate that the specific heat CV, which has recently become observable in cold atom physics, is a useful quantity for understanding strong-coupling aspects of this quantum system.
UR - http://www.scopus.com/inward/record.url?scp=85021946601&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021946601&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.86.074302
DO - 10.7566/JPSJ.86.074302
M3 - Article
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 7
M1 - 074302
ER -