Abstract
This work presents new results about the graviton massive spectrum in
two-field thick branes. Analyzing the massive spectra with a relative
probability method we have firstly showed the presence of resonance
structures and obtained a connection between the thickness of the defect
and the lifetimes of such resonances. We obtain another interesting
result considering the degenerate Bloch brane solutions. In these thick
brane models, we have the emergence of a splitting effect controlled by
a degeneracy parameter. When the degeneracy constant tends to a critical
value, we have found massive resonances to the gravitational field
indicating the existence of modes highly coupled to the brane. We also
discussed the influence of the brane splitting effect over the resonance
lifetimes. (C) 2014 The Authors. Published by Elsevier B.V.
Users
Please
log in to take part in the discussion (add own reviews or comments).