Contact terms, symmetries and D-instantons

Abstract

The scattering of NS-NS antisymmetric tensor states in the presence of D-instantons in type IIB superstring theory is studied. It is shown that in order to preserve gauge invariance, spacetime supersymmetry and picture changing symmetry the inclusion of boundary contact terms for closed string antisymmetric tensor vertex operators is necessary.

18 pages, Latex

References in corpus (5)

• A Large-N Reduced Model as Superstring
• Properties of D-Branes in Matrix Model of IIB Superstring
• Extra Dimensions in Superstring Theory
• Vertex Operators for Super Yang-Mills and Multi D-Branes in Green-Schwarz Superstring
• S-Duality as an Open String Gauge Symmetry

Cited by in corpus (4)

• Chiral splitting and world-sheet gravitinos in higher-derivative string amplitudes
• On D-branes from Gauged Linear Sigma Models
• An orientifold of adS_5xT^11 with D7-branes, the associated alpha'^2- corrections and their role in the dual N=1 Sp(2N+2M)xSp(2N) gauge theory
• Instantons of Type IIB Supergravity in Ten Dimensions