Program

P.20 -- Poster, NCTP-41

Date: Tuesday, 2 August 2016

Time: 08h30 - 10h00

Multiple Component Correlations in Quantum Mixtures of Ultracold Atoms

Nguyen Duong Bo and Tran Minh Tien

Institute of Physics, VAST, 10 Đào Tấn, Ba Đình, Hà nội, Việt nam

Quantum mixtures of ultracold atoms with multiple components are modeled by a multi-component Falicov-Kimball model. The model is analyzed using the dynamical mean field theory. A metal-insulator transition is observed in the homogeneous mixtures. It turns out that the metal-insulator transition occurs at both commensurate and incommensurate fillings. Ultracold atoms loaded in optical lattices give a great opportunity of studying fundamental problems related to strong correlation effects. The Mott transition was observed in fermionic atoms of K40. Recently, the research has been extended to multi-component fermionic atoms, in particular, the mixtures of K40 and Li6. The multi - component Hubbard model with both SU(3) and broken SU(3) symmetry repulsive interactions has been used to study the Mott transition. However, due to the mass imbalance of lithium and potassium atoms, a multi-component Falicov-Kimball model is more appropriate for studying the Mott transition in the mixtures.

Presenter: Nguyen Duong Bo