Acoustics of a simple holographic model with momentum relaxation

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• Shahar Hadar (DAMTP)
• Friday 29 April 2016, 13:00-14:00
• Pavilion B Potter Room (B1.19).

If you have a question about this talk, please contact bn257.

The linear axion model, proposed by Andrade and Withers, is the simplest extant holographic model of transport with momentum relaxation in a strongly coupled field theory without quasiparticles. On the gravity side it is an asymptotically Anti-de Sitter black brane solution of General Relativity with additional matter fields which have a nonzero profile at equilibrium. We develop a gauge-invariant formalism for studying the perturbations of this solution and compute its quasinormal modes. We find strong evidence for the model’s stability and find an interesting critical behaviour of a certain family of modes. For a special value of the parameters the symmetry is enhanced, allowing an analytical computation of the full quasinormal spectrum.

This talk is part of the DAMTP Friday GR Seminar series.

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