Triangle Seminars
Tuesday, 15 Mar 2011
Mirror Symmetry for Grassmannians
Konstanze Rietsch
(Kings)
Wednesday, 16 Mar 2011
Physical properties of p-wave holographic superconductors
Johanna Erdmenger
(Munich)
Abstract:
Recently, considerable progress has been achieved in using gauge/gravity
duality for describing strongly coupled systems of relevance for condensed
matter physics. In this context, I discuss both top-down approaches and
bottom-up approaches to holographic superconductors where the order
parameter has p-wave symmetry. In the top-down approach considered, the
holographic superconductors are realized in a probe brane construction
involving a probe of two D-branes at finite isospin density. The dual
field theory is known explicitly. We obtain the thermodynamics, the
transport properties and the Fermi surface for these systems. Moreover, we
consider bottom-up approaches for p-wave superconductors in which we study
the back-reaction of the required SU(2) gauge field on the geometry. We
find the phase diagram. A particularly interesting feature of this model
is that the shear viscosity over entropy ratio displays non-universal
behaviour, it is temperature-dependent at leading order in N and lambda
Recently, considerable progress has been achieved in using gauge/gravity
duality for describing strongly coupled systems of relevance for condensed
matter physics. In this context, I discuss both top-down approaches and
bottom-up approaches to holographic superconductors where the order
parameter has p-wave symmetry. In the top-down approach considered, the
holographic superconductors are realized in a probe brane construction
involving a probe of two D-branes at finite isospin density. The dual
field theory is known explicitly. We obtain the thermodynamics, the
transport properties and the Fermi surface for these systems. Moreover, we
consider bottom-up approaches for p-wave superconductors in which we study
the back-reaction of the required SU(2) gauge field on the geometry. We
find the phase diagram. A particularly interesting feature of this model
is that the shear viscosity over entropy ratio displays non-universal
behaviour, it is temperature-dependent at leading order in N and lambda
Posted by: IC
Holographic superconductors from gauged supergravity
Jorge Russo
(Barcelona)
Abstract:
Gauged supergravities arise from consistent truncations of string theory and provide a solid framework for condensed matter applications, in a context where the dual field theory is well understood. In this talk we shall discuss different models, including p-wave superconductivity by condensation of a two-form potential.
Gauged supergravities arise from consistent truncations of string theory and provide a solid framework for condensed matter applications, in a context where the dual field theory is well understood. In this talk we shall discuss different models, including p-wave superconductivity by condensation of a two-form potential.
Posted by: QMW