231 citations · 2.2k across the 38 of their papers we have counts for
5 papers · 1 filter
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…
Critical behavior of the black hole / black string transition
Michael Kalisch, Sebastian Moeckel, Martin Ammon
We numerically construct static localized black holes in five and six spacetime dimensions which are solutions to Einstein's vacuum field equations with one compact periodic dimens…
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…