Twisted Split Fermions, Flavor and the Strong CP problem
The framework of split fermions [Arkani-Hamed and Schmaltz] explain the
flavor hierarchies in the standard model without invoking symmetries by
generating small overlaps between wavefunctions in an extra dimension.
However, in previous models an enhanced symmetry was assumed for
simplicity. In this talk I present the consequence of relaxing this
assumption, which yields `twisted split fermions'. I show that the added
twist does not damage the appealing features of split fermions.
Furthermore, the twist introduces a new source of CP violation which may
be used to explain the smallness of the strong CP phase in a model of
spontaneous CP breaking. The framework of twisted split fermions can thus
solve the Flavor and Strong CP problems in conjunction.