Universal Scaling Properties Of Holographic Cohesive Phases Seminar
- Time:
- 14:00
- Date:
- 1 October 2013
- Venue:
- Room 4121 Building 46 Highfield Campus University of Southampton SO17 1BJ
Event details
A String Theory Seminar
In this talk, we focus on strongly-coupled, translation-invariant holographic phases at finite density. We show that they can be classified according to the scaling behavior of the metric, the electric potential and the electric flux, introducing to new scaling exponents (cohesion and conduction). Solutions fall into two classes, depending on whether they break relativistic symmetry or not. We show that the dimensions of IR operators are governed by the new scaling exponents, as well as the low-frequency scaling of the optical conductivity. We show that thermodynamically stable phases are always gapless. Finally, we examine a refinement of the holographic entanglement entropy sensitive to the IR behaviour of the electric flux, and show that the minimal surface thus obtained can be different from the Ryu-Takayanagi proposal depending on the cohesion exponent.
Speaker information
Blaise Goutéraux , NORDITA. Blaise Goutéraux Blaise Goutéraux received his PhD in Theoretical Physics from Paris-Sud University in 2010, under the supervision of Pr. C. Charmousis. The topic of his doctoral thesis concerned exact black hole solutions of the (modified) Einstein's equations in the presence of matter fields and/or with extra dimensions. He then moved to a Research and Teaching position at Paris Diderot University from 2010 to 2012, before joining Nordita in the Fall 2012. Blaise is interested in all topics pertaining to gravity, black holes and holography, as well as many others (such as modifications of gravity, cosmology, quantum gravity, ...). His recent work has fallen into two broad directions, mutually interconnected. First, he has been working for the past couple of years on holographic applications to Condensed Matter systems, and in particular how Infra-Red bulk geometries displaying specific scaling properties can be used to model the ground state of strange metals or high critical temperature superconductors. Second, he has also worked in higher-dimensional gravity: he has studied black hole solutions in Lovelock theory, a well-behaved higher-dimensional gravity theory with higher-derivative Lagrangians; and more recently has started studying possible connections between the Fluid/Gravity correspondence in AdS spaces and the Blackfold approach in Ricci flat spaces.