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Finiteness of gravitational corrections to magnetic moments and supergravity embedding

Bellucci, S. and Cheng, Hai-Yang and Deser, S. (1985) Finiteness of gravitational corrections to magnetic moments and supergravity embedding. Nuclear Physics B, 252 . pp. 389-400. ISSN 0550-3213. http://resolver.caltech.edu/CaltechAUTHORS:20161220-161055050

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Abstract

We calculate the one-loop O(κ^2) contribution to the anomalous magnetic moment of a lepton in the framework of N = 1 supergravity coupled to super-QED with a charged massive scalar multiplet source, using both supersymmetry violating and preserving regularizations. Since a Pauli term is forbidden by supersymmetry, the ordinary gravity plus QED contribution must be just the negative of that given by the new supersymmetry diagrams in the latter scheme. In particular, the infinite part of the new terms' contribution vanishes; the reason for this is traced to an effective chiral-dual symmetry of our sector. Thus, the “miracle” of the moment's finiteness in ordinary gravity is accounted by supergravity embedding. The significance and implications of regularization ambiguities are also discussed.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0550-3213(85)90454-7DOIArticle
http://www.sciencedirect.com/science/article/pii/0550321385904547PublisherArticle
ORCID:
AuthorORCID
Deser, S.0000-0001-9285-9434
Additional Information:© 1985 Elsevier. Received 13 June 1984.
Record Number:CaltechAUTHORS:20161220-161055050
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20161220-161055050
Official Citation:S. Bellucci, Hai-Yang Cheng, S. Deser, Finiteness of gravitational corrections to magnetic moments and supergravity embedding, Nuclear Physics B, Volume 252, 1985, Pages 389-400, ISSN 0550-3213, http://dx.doi.org/10.1016/0550-3213(85)90454-7. (http://www.sciencedirect.com/science/article/pii/0550321385904547)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73030
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:21 Dec 2016 17:28
Last Modified:21 Dec 2016 17:28

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