2016 CAP Congress / Congrès de l'ACP 2016

Real-space renormalization group approach to the Anderson model

14 Jun 2016, 19:16

2m

SITE Atrium (University of Ottawa)

Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) DCMMP Poster Session with beer / Session d'affiches, avec bière DPMCM

Speaker

Eamonn Campbell (Trent University)

Description

Real-space renormalization group approach to the Anderson model Many of the most interesting electronic behaviors currently being studied are associated with strong correlations. In addition, many of these materials are disordered either intrinsically or due to doping. Solving interacting systems exactly is extremely computationally expensive, and moreover approximate techniques developed for strongly correlated systems do not adapt to the inclusion of disorder easily. However a real-space renormalization group (RSRG) approach seems ideally suited for strongly disordered systems. While this approach has been successfully applied to many systems, few applications have been specific to the Anderson model. We present a RSRG study of the Anderson model, benchmarking density of states and inverse participation ratio results against exact diagonalization. Our approach points to the possibility of a RSRG approach to strongly disordered and interacting systems of significantly greater size than currently possible with exact diagonalization