Scalar hair from a derivative coupling of a scalar field to the Einstein tensor

Kolyvaris, T; Koutsoumbas, G; Papantonopoulos, E; Siopsis, G

dc.contributor.author	Kolyvaris, T	en
dc.contributor.author	Koutsoumbas, G	en
dc.contributor.author	Papantonopoulos, E	en
dc.contributor.author	Siopsis, G	en
dc.date.accessioned	2014-03-01T02:12:09Z
dc.date.available	2014-03-01T02:12:09Z
dc.date.issued	2012	en
dc.identifier.issn	02649381	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30019
dc.title	Scalar hair from a derivative coupling of a scalar field to the Einstein tensor	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0264-9381/29/20/205011	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0264-9381/29/20/205011	en
heal.identifier.secondary	205011	en
heal.publicationDate	2012	en
heal.abstract	We consider a gravitating system of vanishing cosmological constant consisting of an electromagnetic field and a scalar field coupled to the Einstein tensor. A Reissner-Nordström black hole undergoes a second-order phase transition to a hairy black hole of generally anisotropic hair at a certain critical temperature which we compute. The no-hair theorem is evaded due to the coupling between the scalar field and the Einstein tensor. Within a first-order perturbative approach, we calculate explicitly the properties of a hairy black hole configuration near the critical temperature and show that it is energetically favourable over the corresponding Reissner-Nordström black hole. © 2012 IOP Publishing Ltd.	en
heal.journalName	Classical and Quantum Gravity	en
dc.identifier.doi	10.1088/0264-9381/29/20/205011	en
dc.identifier.volume	29	en
dc.identifier.issue	20	en