Sound Modes of a Bose-Fermi Mixture Superfluid at Finite Temperatures

被引：1
|
作者：
Ono, Yosuke [1 ]
Sakamoto, Ryohei [1 ]
Mori, Hiroyuki [1 ]
Arahata, Emiko [1 ]
机构：
[1] Tokyo Metropolitan Univ, Fac Sci & Engn, Hachioji, Tokyo 1920397, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2016年 / 85卷 / 06期
关键词：
D O I：
10.7566/JPSJ.85.065004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the sound modes of a Bose-Fermi mixture superfluid at finite temperatures in the collisional hydrodynamic regime. We extend Landau's hydrodynamic theory to deal with a Bose-Fermi mixture superfluid and show the existence of three sound modes. We calculate the hydrodynamic sound velocities numerically using the Nozieres and Schmitt-Rink theory at unitarity. The three-sound-modes hybrid in Bose-Fermi mixture superfluids contrasts with the two sound modes exhibited by He-3 and He-4 superfluids.
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