Spectrum of the two-flavor Schwinger model from the Heisenberg spin chain

F. Berruto, G. Grignani, G. W. Semenoff, P. Sodano
1999 Physical Review D, Particles and fields  
We study the strong coupling limit of the 2-flavor lattice Schwinger model in the Hamiltonian formalism using staggered fermions. We show that the problem of finding the low-lying states is equivalent to solving the Heisenberg antiferromagnetic spin chain. We find good agreement with the continuum theory.
doi:10.1103/physrevd.59.034504 fatcat:oa37zq6xijcdxm73is6vufxpou