Equivalent bosonic theory for the massive Thirring model with non local interaction

KANG LI; CARLOS NAÓN

JOURNAL OF PHYSICS. A - MATHEMATICAL AND GENERAL

IOP

Año: 1998 vol. 31 p. 7929 - 7937

0305-4470

We study, through path-integral methods, an extension of the massive Thirring model in which the interaction between currents is non-local. By examining the mass-expansion of the partition function we show that this non-local massive Thirring model is equivalent to a certain non-local extension of the sine-Gordon theory. Thus, we establish a non-local generalization of the famous Coleman's equivalence. We also discuss some possible applications of this result in the context of one-dimensional strongly correlated systems and finite-size Quantum Field Theories.