Disc amplitudes, picture changing and space-time actions

Abstract

We study in detail the procedure for obtaining couplings of D-branes to closed string fields by evaluating string theory disc amplitudes. We perform a careful construction of the relevant vertex operators and discuss the effects of inserting the boundary state which encodes the presence of the D-brane. We confront the issue of non-decoupling of BRST-exact states and prove that the problem is evaded for the computations we need, thus demonstrating that our amplitudes are automatically gauge-invariant and independent of the distribution of picture charge. Finally, we compute explicitly the two-point amplitudes of two NS-NS fields or one NS-NS and one R-R field on the disc, and we carefully compare all the lowest order terms with predictions from supergravity.

55 pages, 1 figure

References in corpus (6)

• Flux interactions on D-branes and instantons
• Higher Derivative Brane Couplings from T-Duality
• Ramond-Ramond field strength couplings on D-branes
• S-duality of D-brane action at order $O({\alpha }^{\prime 2})$
• Towards extending the Chern-Simons couplings at order $O({\alpha }^{\prime 2})$
• On RR couplings on D-branes at order $O({\alpha }^{\prime 2})$

Cited by in corpus (12)

• M-theory and Type IIA Flux Compactifications
• RNS derivation of N-point disk amplitudes from the revisited S-matrix approach
• T-duality of the Riemann curvature corrections to supergravity
• Ricci curvature corrections to type II supergravity
• On Higher Derivative Couplings in Theories with Sixteen Supersymmetries
• Higher Derivative Corrections to O-plane Actions: NS-NS Sector
• Ramond-Ramond S-matrix elements from T-dual Ward identity
• New Examples of Flux Vacua
• Supersymmetric double-well matrix model as two-dimensional type IIA superstring on RR background
• S-duality constraint on higher-derivative couplings
• Three-Point Disc Amplitudes in the RNS Formalism
• Closed string disk amplitudes in the pure spinor formalism