2015/12/03 by Christof Gattringer, Gattringer, Christof, T. Kloiber +3
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Quantum Chromodynamics and Particle Interactions #Quantum many-body systems #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.1512.00995
openalex publication_date 2015/12/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Complex action problems coming from either a chemical potential or a\ntopological term have been solved for several models in recent years by mapping\nthem to so-called dual degrees of freedom. In terms of these dual variables the\npartition sum has only real and positive contributions such that a Monte Carlo\nsimulation is possible. In this paper we discuss a dual representation for\nmassless staggered fermions in two dimensions coupled to a U(1) gauge field. We\ninclude a topological term, and for the case of several flavors with vanishing\ntotal charge also a chemical potential. We show that the real and positive\ndualization can also be generalized to a system of nanowires (1+1 dimensional\nfermions) coupled to a 3+1 dimensional U(1) gauge field.\n