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TT: Fachverband Tiefe Temperaturen

TT 38: Matter At Low Temperature: Quantum Liquids, Bose-Einstein Condensates, Ultra-cold Atoms, ...

TT 38.5: Vortrag

Freitag, 29. Februar 2008, 11:15–11:30, H 3010

Trionic phase of the attractive SU(3)-Hubbard model — •Guido Klingschat and Carsten Honerkamp — Theoretische Physik, Universität Würzburg

Recently, a quantum phase transition from a color superfluid to a colorless phase with conglomerates of 3 fermions on a single site (’trions’) has been proposed to occur in the attractive SU(3)-Hubbard model [Rapp et al., Phys. Rev. Lett. 98, 160405 (2007)]. Here we analyze the properties of the trionic phase using exact diagonalization. We determine the spectral function of single particle and trionic excitations, and compute spatial correlations. This way we can characterize the effective quasiparticles of the strong coupling phase.