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Logarithmic corrections to black hole entropy: the non-BPS branch
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Journal Article
Logarithmic corrections to black hole entropy: the non-BPS branch
2018
Overview
A
bstract
We compute the leading logarithmic correction to black hole entropy on the non-BPS branch of 4D
N
≥
2
supergravity theories. This branch corresponds to finite temperature black holes whose extremal limit does not preserve supersymmetry, such as the
D
0 −
D
6 system in string theory. Starting from a black hole in minimal Kaluza-Klein theory, we discuss in detail its embedding into
N
=
8
, 6, 4, 2 supergravity, its spectrum of quadratic fluctuations in all these environments, and the resulting quantum corrections. We find that the
c
-anomaly vanishes only when
N
≥
6
, in contrast to the BPS branch where
c
vanishes for all
N
≥
2
. We briefly discuss potential repercussions this feature could have in a microscopic description of these black holes.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V,Springer Berlin,SpringerOpen
