Vacuum polarization of STU black holes and their subtracted geometry limit

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

Povzetek

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.

Ključne besede

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

Podatki

Jezik:	Angleški jezik
Leto izida:	2015
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM - Univerza v Mariboru
UDK:	530.122.3
COBISS:	86136833
ISSN:	1029-8479
Št. ogledov:	999
Št. prenosov:	323
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	črne luknje;supergravitacija;teorija superstrun;modeli konformnega polja;dualnost superstrun;
URN:	URN:SI:UM:
Vrsta dela (COBISS):	Znanstveno delo
Strani:	ǂart. ǂ130
Zvezek:	ǂIssue ǂ1
Čas izdaje:	jan. 2015
DOI:	10.1007/JHEP01(2015)130
ID:	10844766