日本原子力研究開発機構 (JAEA) / 量子ビーム応用研究部門
放射光科学研究ユニット / 放射光量子シミュレーショングループ
|Date and time:||30th June (Tue.) 16:00〜|
|Place:||University of Hyogo, Lecture room (room 739) 7F|
|Title:||Finite-temperature properties of attractive three-component fermionicatoms in optical lattices|
|講演者:||菅 誠一郎 氏 （兵庫県立大学）|
|Speaker:||Prof. Seiichiro Suga (University of Hyogo)|
Cold atoms have been investigated intensively. Recently, 6Li fermionic atoms with a balanced population of three internal degrees of freedom (colors) have succeeded in creating. In the experiment, anomalous increase of the three-body loss was discussed in connection with torionic states, where three atoms with different colors form singlet bound states. In this talk, I will show our recent results for zero- and finite-temperature properties of attractive three-component fermionic atoms in optical lattices. By using a self-energy functional approach, we find that the second order transition from a Fermi liquid to a color superfluid (CSF), where atoms from two of three colors form the Cooper pairs, occurs with increasing the strength of the attrtactive interaction. In the strong attractive interaction region, the first order transitions from the CSF to the trionic state takes place. In the higher temperature region, a crossover between the Fermi liquid and the trionic state is found. I will also discuss the effects of the anisotropy of the attractive interactions.