Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1997-01-30
Phys.Rev. D56 (1997) 55-67
Physics
High Energy Physics
High Energy Physics - Lattice
RevTeX, 10 figures, add one more reference
Scientific paper
10.1103/PhysRevD.56.55
It is shown that detailed and accurate information about the mass spectrum of the massive Schwinger model can be obtained using the technique of strong-coupling series expansions. Extended strong-coupling series for the energy eigenvalues are calculated, and extrapolated to the continuum limit by means of integrated differential approximants, which are matched onto a weak-coupling expansion. The numerical estimates are compared with exact results, and with finite-lattice results calculated for an equivalent lattice spin model with long-range interactions. Both the heavy fermion and the light fermion limits of the model are explored in some detail.
Hamer Chris J.
Oitmaa Jaan
Weihong Zheng
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