1996/08/20 by N. Evans, Nick Evans, Stephen D. H. Hsu +3 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-th
paper · pdf · doi:10.1016/s0550-3213(96)00595-0
published as Nucl.Phys. B484 (1997) 124-140 · 18 pages, LaTeX, 10 epsf figures
arxiv created 1996/08/20 · openalex publication_date 1997/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We investigate the behavior of softly broken N = 2 SQCD at non-zero bare theta angle θ0, using superfield spurions to implement the SUSY breaking. We find a first-order phase transition as θ0 is varied from zero to 2π, in agreement with a prediction of 't Hooft. The low-energy theta angle θeff, which determines the effective charges of dyonic excitations, has a complicated dependence on θ0 and the breaking parameters.