Scalar QED₂ with a topological term - a lattice study in a dual\n representation

2014/10/13 by T. Kloiber, Kloiber, Thomas, Christof Gattringer +1 · 1 citation
Physics and Astronomy · #Quantum Mechanics and Applications #Noncommutative and Quantum Gravity Theories #Quantum and electron transport phenomena

paper · pdf · doi:10.48550/arxiv.1410.3216

Abstract

We present a dual representation for the partition function of 2-dimensional\nscalar quantum electrodynamics with a topological term (\θ-term). In the\ndual representation the complex action problem at non-zero \θ is absent,\nwhich is an obstacle for Monte Carlo simulations in the conventional form of\nthe model. We discuss the technical aspects of the dual representation and show\nthat a dual Monte Carlo simulation can be implemented. As a first application\nwe demonstrate how the 2\π-periodicity of physical observables is recovered\nin a suitable continuum limit.\n

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• Condensation phenomena in two-flavor scalar QED at finite chemical\n potential

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