Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-09-12
Phys. Rev. Lett. 100 (2008) 200401
Physics
Condensed Matter
Statistical Mechanics
4 pages, 3 figures, minor revisions to text, replacement figure, refs added and updated
Scientific paper
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 groundstate 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.
Batchelor Murray T.
Guan X.-W.
Lee Chaohong
Zhou Huan-Qiang
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