Selection Rules and RR Couplings on Non-BPS Branes

Abstract

We compute three and four point functions of the non-BPS scattering amplitudes, including a closed string Ramond-Ramond, gauge/scalar and tachyon in type IIA (IIB) superstring theories. We then discover a unique expansion for tachyon amplitudes in both non-BPS and D-brane anti D-brane formalisms. Based on remarks on Chan-Paton factors and arXiv:1304.3711, we propose selection rules for all non-BPS scattering amplitudes of type II superstring theory. These selection rules, rule out various non-BPS higher point correlation functions of the string theory.

27 pages, Latex file, no figure,v2: the title is shortened. To appear in JHEP

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• Remarks on the mixed Ramond -Ramond, open string scattering amplitudes of BPS, non-BPS and brane-anti brane
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• On RR Couplings, Singularity Structures and all order ${\alpha }^{\prime }$ contact interactions to BPS String Amplitudes
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• Highly Symmetric D-brane-Anti-D-brane Effective Actions
• Remarks on Non-BPS String Amplitudes and Their All Order ${\alpha }^{\prime }$ Contact Interactions in IIB, IIA
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• On WZ and RR Couplings of BPS Branes and their all order ${\alpha }^{\prime }$ Corrections in IIB, IIA
• On All-Order Higher-Point $\text{D}p$-$\overline{\text{D}p}$ Effective Actions
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• On Non-BPS Effective Actions of String Theory
• All-Order Quartic Couplings in Highly Symmetric D-brane-Anti-D-brane Systems
• On Special Limit of Non-Supersymmetric Effective Actions of type II String theory
• On BPS World Volume, RR Couplings and their ${\alpha }^{\prime }$ Corrections in type IIB
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