Calculation of the S Matrix of the Massive Thirring Model on a Momentum Space Lattice
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Abstract: (Springer)
TheS-matrix of the massive Thirring model is calculated non-perturbatively using a momentum space discretization. This represents the first application of this technique to a fermionic model. We find agreement up to 3 digits with 2nd order perturbation theory in the small coupling regime. Renormalization effects are found to be small. Our results do not support the old analytic solution of theS-matrix by Berezin and Sushko, but do support that of Zamolodchikov and Zamolodchikov.- Thirring model
- FIELD THEORY: MASSIVE
- MASSIVE: FIELD THEORY
- LATTICE FIELD THEORY: TWO-DIMENSIONAL
- S-MATRIX
- NONPERTURBATIVE
- RENORMALIZATION: EFFECT
- NUMERICAL CALCULATIONS
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