Speaker
Mr
Thomas Kloiber
(University of Graz)
Description
We study the two dimensional nonlinear O(3) model with a chemical potential coupled to the conserved charge. The complex action problem occurring at nonzero chemical potential is solved by means of a duality transform, which yields real and positive weights and makes Monte Carlo simulations feasible. We find a phase transition at the end of a Silver Blaze region, where a net number of particles appears in the system. We show various results for bulk observables and correlators at finite chemical potential and discuss their finite size behavior. Furthermore, an approximate method to obtain the two particle potential is discussed.
Primary author
Mr
Thomas Kloiber
(University of Graz)
Co-authors
Prof.
Christof Gattringer
(University of Graz)
Dr
Falk Bruckmann
(University of Regensburg)
Dr
Tin Sulejmanpasic
(North Carolina State University)
