English

On All-Order Higher-Point $\text{D}p$-$\overline{\text{D}p}$ Effective Actions

High Energy Physics - Theory 2019-10-16 v3 High Energy Physics - Phenomenology Mathematical Physics math.MP

Abstract

In this paper we derive a class of contributions to all orders in α\alpha' to the effective action of D-brane-anti D-brane systems in Type II String Theory, considering an amplitude involving a closed-string Ramond-Ramond state and four open-string states: two tachyons, a scalar and a gauge boson. This type of amplitude arises in both Type IIA and Type IIB strings, and reveals a number of new effective couplings. Furthermore, we derive a series representation for the result that goes beyond a factorized limit that was recently studied, and which is expected to apply to more general six-point amplitudes of superstrings, including external fermions.

Keywords

Cite

@article{arxiv.1903.07540,
  title  = {On All-Order Higher-Point $\text{D}p$-$\overline{\text{D}p}$ Effective Actions},
  author = {Riccardo Antonelli and Ivano Basile and Ehsan Hatefi},
  journal= {arXiv preprint arXiv:1903.07540},
  year   = {2019}
}

Comments

V3: 37 pages, accepted version and to appear in JCAP

R2 v1 2026-06-23T08:11:45.165Z