Magnetic phase transitions in one-dimensional strongly attractive three-component ultracold fermions

作者：Guan X W^*; Batchelor M T; Lee C; Zhou H Q

来源：Physical Review Letters, 2008, 100(20): 200401.

DOI：10.1103/PhysRevLett.100.200401

We investigate the nature of trions, pairing, and quantum phase transitions in one-dimensional strongly attractive three-component ultracold fermions in external fields. Exact results for the ground-state energy, critical fields, magnetization and phase diagrams are obtained analytically from the Bethe ansatz solutions. Driven by Zeeman splitting, the system shows exotic phases of trions, bound pairs, a normal Fermi liquid, and four mixtures of these states. Particularly, a smooth phase transition from a trionic phase into a pairing phase occurs as the highest hyperfine level separates from the two lower energy levels. In contrast, there is a smooth phase transition from the trionic phase into a normal Fermi liquid as the lowest level separates from the two higher levels.

• 出版日期2008-5-23
• 单位重庆大学