Seminar: "Spin liquid phases in the SU(4) and SU(3) Heisenberg model on the honeycomb lattice" Prof. Karlo Penc,Institute for Solid State Physics and Optics

" Spin liquid phases in the SU(4) and SU(3) Heisenberg model on the honeycomb lattice "

Wed 17th July from 14:30 at C016, Lab 1, Campus

Prof. Karlo Penc

Institute for Solid State Physics and Optics, Wigner Research Centre for Physics of the Hungarian Academy of Sciences

       SU(N) Heisenberg model is the effective model of Mott insulators with N degrees of freedom per site, when the interaction is highly symmetrical. Such a situation may happen for spin-orbital systems and for ultracold alkaline-earth atoms in optical lattices. Using a combination of analytical and numerical methods, we studied the zero temperature properties of the model on honeycomb lattice for different values of N.

       In the seminar, I will present our recent findings for the spin-orbital liquid in the SU(4) Heisenberg model on the honeycomb lattice, with algebraic decay of correlations. Furthermore, for the SU(3) case, I will discuss the competition between ordered and plaquette states.