Sahoo, Bindusar ; Sen, Ashoke (2006) Higher derivative corrections to non-supersymmetric extremal black holes in N=2 supergravity Journal of High Energy Physics, 2006 (9). No pp. given. ISSN 1126-6708
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Official URL: http://iopscience.iop.org/1126-6708/2006/09/029?fr...
Related URL: http://dx.doi.org/10.1088/1126-6708/2006/09/029
Abstract
Using the entropy function formalism we compute the entropy of extremal supersymmetric and non-supersymmetric black holes in N=2 supergravity theories in four dimensions with higher derivative corrections. For supersymmetric black holes our results agree with all previous analysis. However in some examples where the four dimensional theory is expected to arise from the dimensional reduction of a five dimensional theory, there is an apparent disagreement between our results for non-supersymmetric black holes and those obtained by using the five dimensional description. This indicates that for these theories supersymmetrization of the curvature squared term in four dimension does not produce all the terms which would come from the dimensional reduction of a five dimensional action with curvature squared terms.
Item Type: | Article |
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Source: | Copyright of this article belongs to Institute of Physics. |
Keywords: | Superstrings and Heterotic Strings; M-Theory; Black Holes in String Theory |
ID Code: | 44002 |
Deposited On: | 20 Jun 2011 07:17 |
Last Modified: | 18 May 2016 00:48 |
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