Speaker
Prof.
Christof Gattringer
(University of Graz)
Description
We show that the massless Schwinger model with staggered fermions can be represented with dual variables which are loops for the fermions and surfaces for the gauge fields. In the dual form the complex action problem of the conventional representation at finite chemical potential or non-vanishing theta-angle is absent, and dual Monte Carlo simulations are possible at arbitrary values of these parameters. We show that the dualization can be generalized to 1+1 dimensional fermions interacting with 4 dimensional U(1) gauge fields, i.e., to a system of wires with relativistic charged fermions.
Primary author
Prof.
Christof Gattringer
(University of Graz)
Co-authors
Mr
Thomas Kloiber
(University of Graz)
Dr
Vasily Sazonov
(University of Graz)
