Quasinormal modes of a semi-holographic black brane and thermalization

Abstract We study the quasinormal modes and non-linear dynamics of a simplified model of semi-holography, which consistently integrates mutually interacting perturbative and strongly coupled holographic degrees of freedom such that the full system has a total conserved energy. We show that the therm...

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Autores principales:	Sukrut Mondkar, Ayan Mukhopadhyay, Anton Rebhan, Alexander Soloviev
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Gauge-gravity correspondence Black Holes Holography and quark-gluon plasmas Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/b0641df3accb4542b5a9bd7e9887c465
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spelling	oai:doaj.org-article:b0641df3accb4542b5a9bd7e9887c4652021-11-14T12:40:22ZQuasinormal modes of a semi-holographic black brane and thermalization10.1007/JHEP11(2021)0801029-8479https://doaj.org/article/b0641df3accb4542b5a9bd7e9887c4652021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)080https://doaj.org/toc/1029-8479Abstract We study the quasinormal modes and non-linear dynamics of a simplified model of semi-holography, which consistently integrates mutually interacting perturbative and strongly coupled holographic degrees of freedom such that the full system has a total conserved energy. We show that the thermalization of the full system can be parametrically slow when the mutual coupling is weak. For typical homogeneous initial states, we find that initially energy is transferred from the black brane to the perturbative sector, later giving way to complete transfer of energy to the black brane at a slow and constant rate, while the entropy grows monotonically for all time. Larger mutual coupling between the two sectors leads to larger extraction of energy from the black brane by the boundary perturbative system, but also quicker irreversible transfer of energy back to the black brane. The quasinormal modes replicate features of a dissipative system with a softly broken symmetry including the so-called k-gap. Furthermore, when the mutual coupling is below a critical value, there exists a hybrid zero mode with finite momentum which becomes unstable at higher values of momentum, indicating a Gregory-Laflamme type instability. This could imply turbulent equipartitioning of energy between the boundary and the holographic degrees of freedom in the presence of inhomogeneities.Sukrut MondkarAyan MukhopadhyayAnton RebhanAlexander SolovievSpringerOpenarticleGauge-gravity correspondenceBlack HolesHolography and quark-gluon plasmasNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-41 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Gauge-gravity correspondence Black Holes Holography and quark-gluon plasmas Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Gauge-gravity correspondence Black Holes Holography and quark-gluon plasmas Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Sukrut Mondkar Ayan Mukhopadhyay Anton Rebhan Alexander Soloviev Quasinormal modes of a semi-holographic black brane and thermalization
description	Abstract We study the quasinormal modes and non-linear dynamics of a simplified model of semi-holography, which consistently integrates mutually interacting perturbative and strongly coupled holographic degrees of freedom such that the full system has a total conserved energy. We show that the thermalization of the full system can be parametrically slow when the mutual coupling is weak. For typical homogeneous initial states, we find that initially energy is transferred from the black brane to the perturbative sector, later giving way to complete transfer of energy to the black brane at a slow and constant rate, while the entropy grows monotonically for all time. Larger mutual coupling between the two sectors leads to larger extraction of energy from the black brane by the boundary perturbative system, but also quicker irreversible transfer of energy back to the black brane. The quasinormal modes replicate features of a dissipative system with a softly broken symmetry including the so-called k-gap. Furthermore, when the mutual coupling is below a critical value, there exists a hybrid zero mode with finite momentum which becomes unstable at higher values of momentum, indicating a Gregory-Laflamme type instability. This could imply turbulent equipartitioning of energy between the boundary and the holographic degrees of freedom in the presence of inhomogeneities.
format	article
author	Sukrut Mondkar Ayan Mukhopadhyay Anton Rebhan Alexander Soloviev
author_facet	Sukrut Mondkar Ayan Mukhopadhyay Anton Rebhan Alexander Soloviev
author_sort	Sukrut Mondkar
title	Quasinormal modes of a semi-holographic black brane and thermalization
title_short	Quasinormal modes of a semi-holographic black brane and thermalization
title_full	Quasinormal modes of a semi-holographic black brane and thermalization
title_fullStr	Quasinormal modes of a semi-holographic black brane and thermalization
title_full_unstemmed	Quasinormal modes of a semi-holographic black brane and thermalization
title_sort	quasinormal modes of a semi-holographic black brane and thermalization
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/b0641df3accb4542b5a9bd7e9887c465
work_keys_str_mv	AT sukrutmondkar quasinormalmodesofasemiholographicblackbraneandthermalization AT ayanmukhopadhyay quasinormalmodesofasemiholographicblackbraneandthermalization AT antonrebhan quasinormalmodesofasemiholographicblackbraneandthermalization AT alexandersoloviev quasinormalmodesofasemiholographicblackbraneandthermalization
_version_	1718429124583751680

Quasinormal modes of a semi-holographic black brane and thermalization

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