Program

P.54 -- Poster, NCTP-40

Date: Tuesday, 28 July 2015

Time: 08h30 - 10h00

Critical behavior near the Mott transition in the half-filled asymmetric Hubbard model

Hoang Anh Tuan (1), Le Duc Anh (2) and Nguyen Thi Hai Yen (1)

(1) Institute of Physics - VAST (2) Hanoi National University of Education

We study the half-filled asymmetric Hubbard model within the two-site dynamical mean field theory. At zero temperature, explicit expressions of the critical interaction $U_c$ for the Mott transition and the local self-energy are analytically derived. Critical behavior of the quasi-particle weights and the double occupancy is also obtained analytically as functions of the on-site interaction U and the hopping asymmetry r. Our results are in good agreement with the ones obtained by much more sophisticated theory.

Presenter: Hoang Anh - Tuan