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2010-01-01 - Article/Dans un journal avec peer-review - Anglais - page(s)

Brihaye Yves , Delsate Térence , Radu Eugen, "Einstein-Gauss-Bonnet black strings" in Journal of High Energy Physics, 2010, 7

  • Edition : Springer, Heidelberg (Germany)
  • Codes CREF : Physico-chimie générale (DI1320), Physique des particules élémentaires (DI1221), Pédagogie (DI4610), Physique théorique et mathématique (DI1210)
  • Unités de recherche UMONS : Physique théorique et mathématique (S814)
Texte intégral :

Abstract(s) :

(Anglais) We construct uniform black string solutions in Einstein-Gauss-Bonnet gravity for all dimensions d between five and ten and discuss their basic properties. Closed form solutions are found by taking the Gauss-Bonnet term as a perturbation from pure Einstein gravity. Nonperturbative solutions are constructed by solving numerically the equations of the model. The Gregory-Laflamme instability of the black strings is explored via linearized perturbation theory. Our results indicate that new qualitative features occur for d = 6, in which case stable, infinitely long black strings exist for large enough values of the Gauss-Bonnet coupling constant. For other dimensions, the black strings are dynamically unstable and have also a negative specific heat. We argue that this provides an explicit realization of the Gubser-Mitra conjecture, which links local dynamical and thermodynamic stability. Non-uniform black strings in Einstein-Gauss-Bonnet theory are also constructed in six spacetime dimensions.

Identifiants :
  • arXiv : 1004.2164
  • DOI : 10.1007/JHEP07(2010)022
  • ISSN : 1029-8479