Holographic Superconductors from Gauged Supergravity
by
Jorge Russo(ICREA, Barcelona)
→
Europe/Stockholm
122:028 (Nordita seminar room)
122:028
Nordita seminar room
Description
Holographic superconductors are strongly coupled systems which undergo a superconducting phase transition and have a gravity dual in the sense of AdS/CFT. We consider minimal setups arising from
different truncations of N=8 five-dimensional SO(6) gauged supergravity
to study phase transitions involving spontaneous breaking of a U(1) symmetry
in SO(6). These truncations only keep the three relevant U(1) vector fields, four complex scalar fields carrying U(1) charges,
plus two neutral scalar fields required by consistency.
By considering thermal ensembles with different fixed U(1) charge densities, we find instabilities towards the formation
of hairy black holes, resulting from a thermodynamical competition between different sectors. The results can be used as a first step to understand new
aspects of the phase diagram of N=4 super Yang-Mills theory with fixed charge densities.
