Seminars & Lectures
| * TITLE | [JRG Seminar] Hubbard model with geometrical frustration using cluster-extension of DMFT and dual fermion methods | ||||||
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| * HOST(Applicant) | |||||||
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| * DATE / TIME | 2009-02-06, 2pm | ||||||
| * PLACE | 512 Hogil Memorial Bldg., APCTP Headquarters, | ||||||
| * ABSTRACT | |||||||
| At first we present the details of the dual fermion (DF), the cluster extension of dynamical mean field theory (CDMFT) and continuous-time quantum Monte Carlo (CT QMC) methods. Using a panoply of these methods we explore the Hubbard model on the triangular and hyperkagome lattice. We find a first-order transition and continuous transition on the triangular and hyper-kagome lattice, respectively. Moreover, we find the reentrant behavior due to competition between the magnetic correlation and itinerancy of electrons by source of geometrical frustration on both lattices. | |||||||
