Determinant of twisted chiral Dirac Operator on the Lattice

Abstract

Using the overlap formulation, we calculate the fermionic determinant on the lattice for chiral fermions with twisted boundary conditions in two dimensions. When the lattice spacing tends to zero we recover the results of the usual string-theory continuum calculations.

Comments: 9 pages, no figures. Error in the derivation of the non-holomorphic piece corrected