Vacuum polarization of STU black holes and their subtracted geometry limit

Mirjam Cvetič (Author), G. W. Gibbons (Author), Zain H. Saleem (Author), Alejandro Satz (Author)

Abstract

We study the vacuum polarization of a massless minimally coupled scalar field at the horizon of four-charge STU black holes. We compare the results for the standard asymptotically flat black holes and for the black holes obtained in the "subtracted limit", both in the general static case and at the horizon pole for the general rotating case. The original and the subtracted results are identical only in the BPS limit, and have opposite sign in the extremal Kerr limit. We also compute the vacuum polarization on the static solutions that interpolate between both the original and the subtracted case through a solution-generating transformation and show that the vacuum polarization stays positive throughout the interpolating solution. In the appendix we provide a closed-form solution for the Green's function on general (static or rotating) subtracted black hole geometries.

Keywords

black holes;supergravity;string theory;conformal field models;string duality;Kvantna logika;Fizika elementarnih delcev;

Data

Language:	English
Year of publishing:	2015
Typology:	1.01 - Original Scientific Article
Organization:	UM - University of Maribor
UDC:	530.122.3
COBISS:	86136833
ISSN:	1029-8479
Views:	999
Downloads:	323
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	črne luknje;supergravitacija;teorija superstrun;modeli konformnega polja;dualnost superstrun;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	ǂart. ǂ130
Issue:	ǂIssue ǂ1
Chronology:	jan. 2015
DOI:	10.1007/JHEP01(2015)130
ID:	10844766