Status | Confirmed |
Seminar Series | SEM-GRECO |
Subjects | hep-th |
Date | Monday 2 October 2017 |
Time | 11:00 |
Institute | IAP |
Seminar Room | Salle des séminaires |
Speaker's Last Name | Garcia-Saenz |
Speaker's First Name | Sebastian |
Speaker's Email Address | |
Speaker's Institution | IAP |
Title | Phonons in holographic superfluids and solids |
Abstract | After reviewing the gravitational dual of superfluids in the context of AdS/CFT, I will describe an analytical method to derive the low-energy spectrum of the boundary theory. The result confirms that, at zero temperature, the effective theory consists of a longitudinal phonon with the correct speed of sound. I will next move on to consider the EFT of solids and use it to motivate the construction of a holographic dual. Here too we are able to derive the correct low- energy effective theory of the phonons in a conformally invariant solid. Lastly we obtain some numerical solutions including backreaction and calculate the free energy, finding evidence that the system melts into a black hole as the temperature is raised, which we interpret as a solid- to-liquid phase transition on the field theory side. |
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