The Exact Quartic Effective Action for the Type Iib Superstring
نویسنده
چکیده
We propose a four-point effective action for the graviton, antisymmetric two-forms, dilaton and axion of type IIB superstring in ten dimensions. It is explicitly SL(2,Z)invariant and reproduces the known tree-level results. Perturbatively, it has only one-loop corrections generalizing the non-renormalization theorem of the R4 term. Finally, the non-perturbative corrections are of the expected form, namely, they can be interpreted as arising from single D-instantons of multiple charge. Research supported in part by the EEC under TMR contract ERBFMRX-CT96-0090. †e-mail: [email protected] [email protected] CERN-TH-97-249 October 1997
منابع مشابه
Cosmological Solutions of Type II
We study maximally symmetric cosmological solutions of type II supersym-metric strings in the presence of the exact quartic curvature corrections to the lowest order effective action, including loop and D-instanton effects. We find that, unlike the case of type IIA theories, de Sitter solutions exist for type IIB superstrings, a conclusion that remains valid when higher-curvature corrections ar...
متن کاملExact Type IIB Superstring Backgrounds
We obtain a family of type IIB superstring backgrounds involving RamondRamond fields in ten dimensions starting from a heterotic string background with vanishing gauge fields. To this end the global SL(2, R) symmetry of the type IIB equations of motion is implemented as a solution generating transformation. Using a geometrical analysis we show that the type IIB backgrounds obtained are solution...
متن کاملHighly Effective Actions
It is conjectured that the world-volume action of a probe D3-brane in an AdS5 × S background of type IIB superstring theory, with one unit of flux, can be reinterpreted as the exact effective action (or highly effective action) for U(2) N = 4 super Yang-Mills theory on the Coulomb branch. An analogous conjecture for U(2)k×U(2)−k ABJM theory is also presented. The main evidence supporting these ...
متن کاملK models and type IIB superstring backgrounds.
A family of type IIB superstring backgrounds involving Ramond-Ramond fields are obtained in ten dimensions starting from a K-model through a generalization of our recent results. The unbroken global SL(2, R) symmetry of the type IIB equations of motion are implemented in this context as a solution generating transfromation. A geometrical analysis, based on the tensor structure of the higher ord...
متن کاملMaximal R-symmetry violating amplitudes in type IIb superstring theory.
On-shell superspace techniques are used to quantify R-symmetry violation in type IIB superstring theory amplitudes in a flat background in 10 dimensions. This shows the existence of a particularly simple class of nonvanishing amplitudes in this theory, which violate R symmetry maximally. General properties of the class and some of its extensions are established that at string tree level are sho...
متن کامل