E(7) SYMMETRICAL AREA OF THE BLACK-HOLE HORIZON

Authors
KALLOSH R KOL B
Citation
R. Kallosh et B. Kol, E(7) SYMMETRICAL AREA OF THE BLACK-HOLE HORIZON, Physical review. D. Particles and fields, 53(10), 1996, pp. 5344-5348
Citations number
23
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
53
Issue
10
Year of publication
1996
Pages
5344 - 5348
Database
ISI
SICI code
0556-2821(1996)53:10<5344:ESAOTB>2.0.ZU;2-O
Abstract
Extreme black holes with 1/8 of unbroken N = 8 supersymmetry are chara cterized by the nonvanishing area of the horizon. The central charge m atrix has four generic eigenvalues. The area is proportional to the sq uare root of the invariant quartic form of E(7(7)). It vanishes in all cases when 1/4 or 1/2 of supersymmetry is unbroken. The supergravity nonrenormalization theorem for the area of the horizon in the N = 8 ca se protects the unique U-duality invariant.