Lecturer: Dr. Iosif Bena
Affiliation: CEA/Saclay
Abstract:
Antibranes in backgrounds that have
charge dissolved in fluxes are a key
ingredient in constructing a landscape
(Multiverse) of deSitter vacua in String
Theory, and also of constructing
microstate solutions corresponding to
non-supersymmetric near-extremal black
holes. There are several regimes of
parameters in which one can study the
physics of these antibranes, and I will
show that in the regime of parameters
where their gravitational backreaction is
important, antibranes have a naked
singularity that cannot be resolved either
by brane polarization or by cloaking with a
black hole horizon, and that signals a
tachyonic instability. I will also present
recent evidence that the theory on the
wordvolume of anti-D3 branes is finite to
all loops. I will conclude by discussing the
implications of these results for the
Multiverse paradigm and for the Fuzzball
proposal.
Additional details of the upcoming Joint
Seminars in Theoretical High Energy Physics
can be found on the following link.