Resonance Scattering Phase Shifts in a 2-d Lattice Model

Details Resonance Scattering Phase Shifts in a 2-d Lattice Model Resonance Scattering Phase Shifts in a 2-d Lattice Model

1992-06-03

arxiv.org/abs/hep-lat/9206004v1

Nucl.Phys. B391 (1993) 463-482

Physics

High Energy Physics

High Energy Physics - Lattice

24 p + 8 PS-figures, UNIGRAZ-UTP-04-05-92

Scientific paper

10.1016/0550-3213(93)90155-I

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.

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