2003/09/18 by Hidenori Fukaya, T. Onogi, Tetsuya Onogi
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1016/s0920-5632(03)02616-1
3 pages, Lattice2003(chiral)
arxiv created 2003/09/18 · openalex publication_date 2004/03/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a numerical study of the massive two-flavor QED in two dimensions with the gauge action proposed by Lüscher, which allows only ``admissible'' gauge fields. We find that the admissibility condition does not allow any topology changes by the local updation in Hybrid Monte Carlo algorithm so that the configurations in each topological sector can be generated separately. By developing a new method to sum over different topological sectors, we investigate θ vacuum effects. Combining with domain-wall fermion action, we obtain the fermion mass dependence and θ dependence of the meson masses, which are consistent with the analytic results by mass perturbation in the continuum theory.