Speaker
Mr
Thomas Kloiber
(University of Graz)
Description
We study the effect of the theta angle in two dimensional scalar QED. Since the theta term is purely imaginary, it introduces a complex action problem which prevents conventional numerical simulations at non-zero values of theta. This problem is solved by mapping the model to a dual representation, which is real and non-negative, hence suitable for Monte Carlo simulations. We present technical aspects of the reformulation as well as physical results concerning, e.g., the topological charge.
Primary author
Mr
Thomas Kloiber
(University of Graz)
Co-author
Prof.
Christof Gattringer
(University of Graz)
