A NEW INTERPRETATION OF BETHE-ANSATZ SOLUTIONS FOR MASSIVE THIRRING MODEL

We reexamine Bethe ansatz solutions of the massive Thirring model. We solve equations of periodic boundary conditions numerically without re ferring to the density of stales. It is found that there is only one b ound state in the massive Thirring model. The bound state spectrum obt ained here is consistent with Fujita-Ogura's solutions of the infinite momentum frame prescription. Further, it turns out that there exist n o solutions For string-like configurations. Instead, we Find boson-bos on scattering states in two-particle two-hole configurations where all the rapidity variables turn out to be real. (C) 1997 Academic Press.