Time-dependent backgrounds of compactified 2D string theory: complex curve and instantons

by Ivan Kostov (Saclay)

Tuesday 15 Mar 2005, 14:00 → 15:00 Europe/Zurich

TH Auditorium (CERN)

The matrix-string correspondence for the c = 1 string theory can be extended to the case of deformations by tachyon modes with non-zero momenta. On the matrix side the deformations are described by a complex curve. As in the minimal string theories, the non-perturbative effects are classified by the double points of the curve. The leading and the sub-leading non-perturbative corrections to the partition function are expressed in terms of one-point (disk) and two-point (annulus) correlation functions of the bosonic field associated with the tachyon source.