One-loop adjoint masses for non-supersymmetric intersecting branes

• Published in: The journal of high energy physics Vol. 2011; no. 8
• Main Authors: Anastasopoulos, P., Antoniadis, I., Benakli, K., Goodsell, M. D., Vichi, A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.08.2011; Springer Nature B.V
• Subjects: Branes; Broken symmetry; Classical and Quantum Gravitation; Configurations; Elementary Particles; Field theory; Gauge theory; High energy physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Relativity Theory; Scalars; String Theory; Supersymmetry; Supersymmetry Breaking; D-branes; Intersecting branes models
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP08(2011)120

We consider breaking of supersymmetry in intersecting D-brane configurations by slight deviation of the angles from their supersymmetric values. We compute the masses generated by radiative corrections for the adjoint scalars on the brane world-volumes. In the open string channel, the string two-point function receives contributions only from the infrared and the ultraviolet limits. The latter is due to tree-level closed string uncanceled NS-NS tadpoles, which we explicitly reproduce from the effective Born-Infeld action. On the other hand, the infrared region reproduces the one-loop mediation of supersymmetry breaking in the effective gauge theory, via messengers and their Kaluza-Klein excitations. In the toroidal set-up considered here, it receives contributions only from N  ≈ 4 and N  ≈ 2 supersymmetric configurations, and thus always leads at leading order to a tachyonic direction, in agreement with effective field theory expectations.