When


Fri 16/01/2015    

13:00 - 14:00

Event Type

Self-intersecting fuzzy extra dimensions and chiral fermions from N=4
super-Yang-Mills

Abstract:

We discuss new solutions in N=4 SYM and the IKKT matrix model, which can be
interpreted in terms of squashed fuzzy extra dimensions.
They can be stabilized either by adding a soft SUSY breaking flux term, or by
internal rotation.Remarkably, even the rotating backgrounds
lead to a low-energy sector with 3 generations of chiral fermions coupled to
scalar and gauge fields, with standard Lorentz-invariant kinematics.
This sector arises from zero modes localized in the extra dimensions, which are
oblivious to the background rotation at low energies.
In addition there is a sector of “heavy” excitations which is not described by a
Lorentz-invariant field theory, but is argued to be suppressed
at low energies assuming that resonances can be avoided. We identify
configurations which may lead to physics reminiscent of the
broken phase of the standard model.