Conformal defects in supergravity : backreacted Dirac delta sources

Bibliographic description

punktacja MNiSW [2015 A]: 40

title:	Conformal defects in supergravity : backreacted Dirac delta sources
author:	Janik Romuald , Jankowski Jakub , Witkowski Piotr
journal title:	The Journal of High Energy Physics
volume:	2015
issue:	7
date of publication :	2015
article ID:	50
ISSN:	1126-6708
eISSN:	1029-8479
DOI:	10.1007/JHEP07(2015)050
language:	English
journal language:	English
abstract in English:	We construct numerically gravitational duals of theories deformed by localized Dirac delta sources for scalar operators both at zero and at finite temperature. We find that requiring that the backreacted geometry preserves the original scale invariance of the source uniquely determines the potential for the scalar field to be the one found in a certain Kaluza-Klein compactification of 11D supergravity. This result is obtained using an efficient perturbative expansion of the backreacted background at zero temperature and is confirmed by a direct numerical computation. Numerical solutions at finite temperatures are obtained and a detailed discussion of the numerical approach to the treatment of the Dirac delta sources is presented. The physics of defect configurations is illustrated with a calculation of entanglement entropy.
keywords in English:	AdS-CFT correspondence, black holes in string theory, holography and condensed matter physics (AdS/CMT)
number of pulisher's sheets:	1,2
affiliation:	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
type:	journal article
subtype:	academic paper