Non-perturbative contributions to the plane-wave string mass matrix
Michael B. Green, Stefano Kovacs, Aninda Sinha
TL;DR
This paper calculates non-perturbative D-instanton effects on the mass matrix of excited string states in type IIB string theory within a plane-wave background, revealing their dependence on key parameters.
Contribution
It introduces a supersymmetric boundary state formalism to explicitly compute D-instanton contributions to the string mass matrix.
Findings
Explicit non-perturbative dependence on string coupling and mode numbers
Leading order D-instanton effects on excited states
Method applicable to arbitrary excited string states
Abstract
D-instanton contributions to the mass matrix of arbitrary excited string states of type IIB string theory in the maximally supersymmetric plane-wave background are calculated to leading order in the string coupling using a supersymmetric light-cone boundary state formalism. The explicit non-perturbative dependence of the mass matrix on the complex string coupling, the plane-wave mass parameter and the mode numbers of the excited states is determined.
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