We study the non-perturbative corrections (NPC) to the partition function of a compactified 2D string theory in a time-dependent background generated by a tachyon source. The sineLiouvilleâ€¦ (More)

The large order growth of string perturbation theory in c â‰¤ 1 conformal field theory coupled to world sheet gravity implies the presence of O(e 1 gs ) non-perturbative effects, whose leading behaviorâ€¦ (More)

We show that the c = 1 bosonic string theory at finite temperature has two matrixmodel realizations related by a kind of duality transformation. The first realization is the standard one given by theâ€¦ (More)

We calculate oneand two-point correlators of winding operators in the matrix model of 2D string theory compactified on a circle, recently proposed for the description of string dynamics on the 2Dâ€¦ (More)

In theories with N=2 supersymmetry on R^{3,1}, supersymmetric bound states can decay across walls of marginal stability in the space of Coulomb branch parameters, leading to discontinuities in theâ€¦ (More)

We clarify the role played by the Immirzi parameter in classical gravity coupled to fermions. Considering the general non-minimal coupling, we show that, although the torsion depends explicitly onâ€¦ (More)

We calculate the free energy, energy and entropy in the matrix quantum mechanical formulation of 2D string theory in a background strongly perturbed by tachyons with the imaginary Minkowskianâ€¦ (More)

We generalize the results of hep-th/0701214 about the covariant c-map to include the perturbative quantum corrections. We also perform explicitly the superconformal quotient from the hyperkÃ¤hler coneâ€¦ (More)