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
N1 - Funding Information:
We thank R. Hanai and D. Kagamihara for discussions. This work was supported by KiPAS project at Keio University. DK thanks Japan International Co-operation Agency (JICA) and Keio Leading-edge Laboratory of Science and Technology (KLL) at Keio University for supporting this research. HT was supported by Grant-in-Aid for JSPS fellows (No. JP17J03975). DI was supported by Grant-in-Aid for Young Scientists (B) (No. JP16K17773) from JSPS. YO was supported by Grand-in-Aid for Scientific Research from MEXT and JSPS of Japan (Nos. JP15K00178, JP15H00840, and JP16K05503).
Publisher Copyright:
©2017 The Physical Society of Japan.
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.
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U2 - 10.7566/JPSJ.86.074302
DO - 10.7566/JPSJ.86.074302
M3 - Article
AN - SCOPUS:85021946601
SN - 0031-9015
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 7
M1 - 074302
ER -