"Bulk fields with brane kinetic terms"
Relatore: Manuel Perez-Victoria- Universita' di Padova
21 Gennaio 2003 ore 15.30
|Models with extra dimensions typically include one or more "branes" which
break translation invariance in the orthogonal coordinates. It is
then possible to have in the action operators localized on the branes, not
only for brane fields but also for fields living in the bulk. These
include brane kinetic terms which modify the propagation of bulk fields.
In this talk I will show how these terms are induced by quantum
corrections and study the effect of general brane kinetic terms
on bulk scalars, fermions and gauge bosons. I will pay special attention
to brane terms containing derivatives in the orthogonal directions, which
give rise to a rather singular behaviour of the fields.