Dispersion relations in non-relativistic two-dimensional materials from quasinormal modes in Hǒrava Gravity

dc.contributor.authorGarbiso, Markus
dc.contributor.authorKaminski, Matthias
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2022-08-02T15:11:56Z
dc.date.available2022-08-02T15:11:56Z
dc.date.issued2019
dc.description.abstractWe compute dispersion relations of non-hydrodynamic and hydrodynamic modes in a non-relativistic strongly coupled two-dimensional quantum field theory. This is achieved by numerically computing quasinormal modes (QNMs) of a particular analytically known black brane solution to 3+1-dimensional Hǒrava Gravity. Hǒrava Gravity is distinguished from Einstein Gravity by the presence of a scalar field, termed the khronon, defining a preferred time-foliation. Surprisingly, for this black brane solution, the khronon fluctuation numerically decouples from all others, having its own set of purely imaginary eigenfrequencies, for which we provide an analytic expression. All other Hǒrava Gravity QNMs are expressed analytically in terms of QNMs of Einstein Gravity, in units involving the khronon coupling constants and various horizons. Our numerical computation reproduces the analytically known momentum diffusion mode, and extends the analytic expression for the sound modes to a wide range of khronon coupling values. In the eikonal limit (large momentum limit), the analytically known dispersion of QNM frequencies with the momentum is reproduced by our numerics. We provide a parametrization of all QNM frequencies to fourth order in the momentum. We demonstrate perturbative stability in a wide range of coupling constants and momenta.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationGarbiso, M., & Kaminski, M. (2019). Dispersion relations in non-relativistic two-dimensional materials from quasinormal modes in Hǒrava Gravity. In Journal of High Energy Physics (Vol. 2019, Issue 10). Springer Science and Business Media LLC. https://doi.org/10.1007/jhep10(2019)087
dc.identifier.doi10.1007/JHEP10(2019)087
dc.identifier.urihttps://ir.ua.edu/handle/123456789/8754
dc.languageEnglish
dc.language.isoen_US
dc.rights.urihttps://creativecommons.org/licenses/by/3.0
dc.subjectAdS-CFT Correspondence
dc.subjectBlack Holes
dc.subjectGauge-gravity correspondence
dc.subjectHolography and condensed matter physics (AdS/CMT)
dc.titleDispersion relations in non-relativistic two-dimensional materials from quasinormal modes in Hǒrava Gravityen_US
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