Stabilizing matter and gauge fields localized on walls

by Norisuke Sakai

Wednesday 4 Sept 2013, 15:00 → 16:00 Europe/Rome

248 (Building C, First Floor)

In the brane-world scenario, it has been a long-standing problem to localize gauge fields on the brane in the field theory method. Both non-Abelian gauge fields and minimally interacting massless matter fields are localized on a domain wall in the five-dimensional spacetime. Field-dependent gauge coupling naturally gives a position-dependent coupling to localize non-Abelian gauge fields on the domain wall. An economical field content allows us to eliminate a moduli for a instability, and to demonstrate the positivity of the position-dependent coupling in the entire moduli space. Effective Lagrangian similar to the chiral Lagrangian is found. Some of the localized gauge fields aquire masses as walls separate, similarly to D-branes. Hence it gives a field theory model for D-branes.