Department of Physics Papers

Document Type

Journal Article

Date of this Version

2-15-2008

Comments

Suggested Citation:
R. Blumenhagen, M. Cvetič, D. Lüst, R. Richter and T. Weigand. (2008). "Nonperturbative Yukawa Couplings from String Instantons." Physical Review Letters 100, 061602.

© 2008 The American Physical Society
http://dx.doi.org/10.1103/PhysRevLett.100.061602

Abstract

Nonperturbative D-brane instantons can generate perturbatively absent though phenomenologically relevant couplings for type II orientifold compactifications with D-branes. We discuss the generation of the perturbatively vanishing SU(5) GUT Yukawa coupling of type (10 10 5H). Moreover, for a simple globally consistent intersecting D6-brane model, we discuss the generation of mass terms for matter fields. This can serve as a mechanism for decoupling exotic matter.

Date Posted: 25 January 2011

This document has been peer reviewed.