Quasinormal modes of Gauss-Bonnet-AdS black holes: towards holographic description of finite coupling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F17%3AA0000052" target="_blank" >RIV/47813059:19240/17:A0000052 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2FJHEP09(2017)139" target="_blank" >https://link.springer.com/article/10.1007%2FJHEP09(2017)139</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP09(2017)139" target="_blank" >10.1007/JHEP09(2017)139</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quasinormal modes of Gauss-Bonnet-AdS black holes: towards holographic description of finite coupling

Popis výsledku v původním jazyce

Here we shall show that there is no other instability for the Einstein-Gauss-Bonnet-anti-de Sitter (AdS) black holes, than the eikonal one and consider the features of the quasinormal spectrum in the stability sector in detail. The obtained quasinormal spectrum consists from the two essentially different types of modes: perturbative and non-perturbative in the Gauss-Bonnet coupling alpha. The sound and hydrodynamic modes of the perturbative branch can be expressed through their Schwazrschild-AdS limits by adding a linear in alpha correction to the damping rates: omega approximate to Re omega_(SAdS) - Im omega_(SAdS) (1 - alpha ((D + 1)(D - 4)/2R^(2)))i, where R is the AdS radius. The non-perturbative branch of modes consists of purely imaginary modes, whose damping rates unboundedly increase when alpha goes to zero. When the black hole radius is much larger than the anti-de Sitter radius R, the regime of the black hole with planar horizon (black brane) is reproduced. If the Gauss-Bonnet coupling alpha (or used in holography lambda_(GB)) is not small enough, then the black holes and branes suffer from the instability, so that the holographic interpretation of perturbation of such black holes becomes questionable, as, for example, the claimed viscosity bound violation in the higher derivative gravity. For example, D = 5 black brane is unstable at vertical bar lambda_(GB)vertical bar &gt; 1/8 and has anomalously large relaxation time when approaching the threshold of instability.

Název v anglickém jazyce

Quasinormal modes of Gauss-Bonnet-AdS black holes: towards holographic description of finite coupling

Popis výsledku anglicky

Here we shall show that there is no other instability for the Einstein-Gauss-Bonnet-anti-de Sitter (AdS) black holes, than the eikonal one and consider the features of the quasinormal spectrum in the stability sector in detail. The obtained quasinormal spectrum consists from the two essentially different types of modes: perturbative and non-perturbative in the Gauss-Bonnet coupling alpha. The sound and hydrodynamic modes of the perturbative branch can be expressed through their Schwazrschild-AdS limits by adding a linear in alpha correction to the damping rates: omega approximate to Re omega_(SAdS) - Im omega_(SAdS) (1 - alpha ((D + 1)(D - 4)/2R^(2)))i, where R is the AdS radius. The non-perturbative branch of modes consists of purely imaginary modes, whose damping rates unboundedly increase when alpha goes to zero. When the black hole radius is much larger than the anti-de Sitter radius R, the regime of the black hole with planar horizon (black brane) is reproduced. If the Gauss-Bonnet coupling alpha (or used in holography lambda_(GB)) is not small enough, then the black holes and branes suffer from the instability, so that the holographic interpretation of perturbation of such black holes becomes questionable, as, for example, the claimed viscosity bound violation in the higher derivative gravity. For example, D = 5 black brane is unstable at vertical bar lambda_(GB)vertical bar &gt; 1/8 and has anomalously large relaxation time when approaching the threshold of instability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

—

Svazek periodika

neuveden

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

23

Strana od-do

'139-i,1'-'139-22'

Kód UT WoS článku

000412097500004

EID výsledku v databázi Scopus

2-s2.0-85030169827