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Exact charges from heterotic black holes

Articolo
Data di Pubblicazione:
2019
Abstract:
We derive exact relations to all orders in the α′ expansion for the charges of a bound system of heterotic strings, solitonic 5-branes and, optionally, a Kaluza-Klein monopole. The expressions, which differ from those of the zeroth-order supergravity approximation, coincide with the values obtained when only the corrections of quadratic order in curvature are included. Our computation relies on the consistency of string theory as a quantum theory of gravity; the relations follow from the matching of the Wald entropy with the microscopic degeneracy. In the heterotic frame, the higher-curvature terms behave as delocalized sources that introduce a shift between near-horizon and asymptotic charges. On the other hand, when described in terms of lower-dimensional effective fields, the solution carries constant charges over space which coincide with those of the asymptotic heterotic fields. In addition, we describe why the Gauss-Bonnet term, which only captures a subset of the relevant corrections of quadratic order in curvature, in some cases succeeds to reproduce the correct value for the Wald entropy, while fails in others.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Black Holes in String Theory; Superstrings and Heterotic Strings; High Energy Physics - Theory; High Energy Physics - Theory
Elenco autori:
Faedo F.; Ramirez P.F.
Link alla scheda completa:
https://iris.unito.it/handle/2318/1788040
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1788040/758807/Exact%20charges%20from%20heterotic%20black%20holes.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
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URL

https://link.springer.com/article/10.1007/JHEP10(2019)033; https://arxiv.org/abs/1906.12287
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