231 citations · 2.2k across the 38 of their papers we have counts for
4 papers · 2 filters
Holographic Phonons
Lasma Alberte, Martin Ammon, Matteo Baggioli +2
We present a class of holographic massive gravity models that realize a spontaneous breaking of translational symmetry - they exhibit transverse phonon modes whose speed relates to…
Black hole elasticity and gapped transverse phonons in holography
Lasma Alberte, Martin Ammon, Matteo Baggioli +2
We study the elastic response of planar black hole (BH) solutions in a simple class of holographic models with broken translational invariance. We compute the transverse quasi-norm…
Higher-Spin Flat Space Cosmologies with Soft Hair
Martin Ammon, Daniel Grumiller, Stefan Prohazka +2
We present and discuss near horizon boundary conditions for flat space higher-spin gravity in three dimensions. As in related work our boundary conditions ensure regularity of the…
Quasinormal modes of charged magnetic black branes & chiral magnetic transport
Martin Ammon, Matthias Kaminski, Roshan Koirala +2
We compute quasinormal modes (QNMs) of the metric and gauge field perturbations about black branes electrically and magnetically charged in the Einstein-Maxwell-Chern-Simons theory…