同宁华
Department of Physics Renmin University of China
地点：唐仲英楼A107-1
时间：2018-06-05 15:30
I will report the implementation of the Lanczos algorithm on natural orbital basis to solve the zero-temperature Green’s function of Anderson impurity models. The technical details are presented, with application to the cases of particle-hole asymmetry, with local magnetic field, and of two impurities. We obtain a linear-dependence of computational coston the number of bath sites within our cut-off precision. The results are benchmarked with conventional Lanczos, quantum Monte Carlo, and numerical renormalization group results, demonstrating its potential as a powerful impurity solver for the dynamical mean-field theory.
1993.9-1997.7: Undergraduate student ；1997.9-2002.7: Ph. D. Candidate ； 2006. 01 - present:Associate Professor, Department of Physics, Renmin University of China2004.11 - 2005.12:Post-doctor; Institute for Theory of Condensed Material, University of Karlsruhe, Germany, with Prof. Matthias Vojta.2003.02 - 2004.10:Research Fellow of the Alexander von Humboldt Foundation; Theoretical Physics III , University of Augsburg, Germany, with Prof. Dieter Vollhardt and Prof. Ralf Bulla.2002.08 - 2003.01:Post-doctor; Theoretical Physics III, University of Augsburg, Germany, with Prof. Dieter Vollhardt and Prof. Ralf Bulla. Awards：2002-2004: Alexander von Humboldt Fellowship, Alexander von Humboldt Foundation. 1999-2000: Excellent Student Scholarship, Institute of Physics, CAS.