Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-02-10
Physics
Condensed Matter
Quantum Gases
9 pages, 8 figures, changed figure 6, fixed typos, added definitions, motivated choice of considered quantities
Scientific paper
10.1103/PhysRevB.82.094521
We investigate the trion formation and the effective trionic properties in the attractive Hubbard model with three fermionic colors using exact diagonalization. The crossover to the trionic regime with colorless compound fermions upon increasing strength of the onsite attraction parameter U features smoothly evolving ground state properties and exhibits clear similarities to the BCS/BEC-crossover for two colors. In the excitation spectrum, there is a clear gap opening between a band of well-defined trions and excitations of broken-up trions at U_c ~ 1.8t. This picture remains the same away from the SU(3)-symmetric point. The spatial pairing correlations for colored Cooper pairs are compatible with a power-law at small attractions and change to an exponential decay above the trionic crossover. Furthermore, we show that the effective trionic liquid for U > U_c can be well modeled with spinless 'heavy' fermions interacting with a strong nearest neighbor repulsion.
Honerkamp Carsten
Klingschat Guido
No associations
LandOfFree
Exact diagonalization study of the trionic crossover and the trion liquid in the attractive three-component Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Exact diagonalization study of the trionic crossover and the trion liquid in the attractive three-component Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exact diagonalization study of the trionic crossover and the trion liquid in the attractive three-component Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-239183