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Calendar of Physics Talks Vienna
| Holographic Superfluids in the Cave of Winds |
| Speaker: | Daniel Arean (SISSA, Trieste) |
| Abstract: | We investigate holographic superfluids in three and four dimensions finding
interesting results about the phase diagram of these systems. We consider
various masses of the scalar field whose condensation gives rise to the
superfluid phase transition.
While in d=3 the basic features of the phase structure do not seem to depend
on the mass of the scalar, in d=4 an intricate structure appears.
In particular, for some intermediate values of the mass, the system after
entering the superfluid phase through a second order phase transition
undergoes a first order phase transition between two superfluid states. This
is what we call the "Cave of Winds" phase diagram.
We also introduce a double-scaling limit which allows us to confirm these
results in a (semi-)analytic way. |
| Date: | Tue, 31.08.2010 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Erwin-Schrödinger-Institut, Boltzmann-HS |
| Contact: | Anton Rebhan, TU Wien |
| Negative refraction from holography |
| Speaker: | Guiseppe Policastro (ENS, Paris) |
| Abstract: | I will discuss my recent work 1006.5714 where we showed how relativistic plasmas with a gravitational dual description
have unusual optical properties and in particular a negative index of refraction, a property experimentally observed in
some special classes of materials. |
| Date: | Wed, 01.09.2010 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Erwin-Schrödinger-Institut, Boltzmann-HS |
| Contact: | Anton Rebhan, TU Wien |
| Speaker: | Chethan Krishnan (SISSA, Trieste) |
| Abstract: | Supersymmetric black holes are extremal, while extremal black holes
need not be supersymmetric. Over the last decade there has been
significant progress in understanding supersymmetric black holes (in
particular in the context of string theory), and it is possible that
perhaps the time is ripe for taking a crack at extremal black holes. I
describe at a basic level some recent developments in this direction.
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| Date: | Thu, 02.09.2010 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Erwin-Schrödinger-Institut, Boltzmann-HS |
| Contact: | Anton Rebhan, TU Wien |
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