paper

S-duality of D-brane action at order

arXiv:1103.3121 · doi:10.1016/j.physletb.2011.06.004

Abstract

Using the compatibility of the DBI and the Chern-Simons actions with the T-duality transformations, the curvature corrections to these actions have been recently extended to include the quadratic B-field couplings at order . In this paper, we use the compatibility of the couplings on D-brane with the S-duality to find the nonlinear RR couplings at order . We confirm the quadratic RR couplings in the DBI part with the disk-level scattering amplitude. Using the regularized non-holomorphic Eisenstein series , we then write the results in invariant form.

Latex file, 14 pages, v5: A mistake in the dilaton factor of the Chern-Simons couplings is corrected. As a result, there is only one modular function in all D-brane couplings

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