1992/06/03 by Christof Gattringer, C. R. Gattringer, C. B. Lang · 4 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Quantum Chromodynamics and Particle Interactions #Theoretical and Computational Physics #hep-lat
paper · pdf · doi:10.1016/0550-3213(93)90155-i
published as Nucl.Phys. B391 (1993) 463-482 · 24 p + 8 PS-figures, UNIGRAZ-UTP-04-05-92
arxiv created 1992/06/03 · openalex publication_date 1993/02/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study a simple 2-d model representing two fields with different mass and a 3-point coupling term. The phase shift in the resonating 2-particle channel is determined from the energy spectrum obtained in Monte Carlo simulations on finite lattices. Masses and wave function renormalization constants of the fields as well as mass and width of the resonance are determined and discussed. The representation of scattering states in terms of the considered operators is analysed.