Multi-instanton calculus in c = 1 string theory

A bstract We formulate a strategy for computing the complete set of non-perturbative corrections to closed string scattering in c = 1 theory from worldsheet perspective. This requires taking into account effect multiple ZZ-instantons, including higher instantons constructed ZZ boundary conditions type ( m, 1), with careful treatment measure and contour integration over instanton moduli space. The only priori ambiguity our prescription is normalization constant $$ \mathcal{N} N m that appears 1)-type instanton, at each positive integer . investigate leading reflection amplitude n -instanton level, i.e. order {e}^{-n/{g}_s} e − n / g s , find striking agreement recent proposal on completion dual matrix quantum mechanics, which turn fixes all