Scherk-Schwarz breaking and intersecting branes

Abstract We study the effect of Scherk–Schwarz deformations on intersecting branes. Non-chiral fermions in any representation of the Chan–Paton gauge group generically acquire a tree-level mass dependent on the compactification radius and the brane wrapping numbers. This offers an elegant solution to one of the long-standing problems in intersecting-brane-world models where the ubiquitous presence of massless non-chiral fermions is a clear embarrassment for any attempt to describe the Standard Model of particle physics.