Abstract
Adopting a fourth-order perturbation expansion as a solver for the impurity problem, we develop a dynamical mean-field theory for the Hubbard model. Zero temperature Mott transition is discussed by calculating a quasiparticle weight z in the infinite dimensional Hubbard model at half filling. We obtain fairly good agreement with the result on the basis of the numerical renormalization group as an impurity solver, revising the result based on the second-order perturbation expansion as the impurity solver.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
