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String-induced gravity and ghost-freedom

Deser, S. and Redlich, A. N. (1986) String-induced gravity and ghost-freedom. Physics Letters B, 176 (3-4). pp. 350-354. ISSN 0370-2693. https://resolver.caltech.edu/CaltechAUTHORS:20161220-161054337

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Abstract

The order α′k^4 four-point graviton amplitudes calculated from the bosonic, heterotic and supersymmetric strings are shown to be derivable from effective gravitational actions in which multiples of the Gauss-Bonnet quadratic curvature contribution are added to the Einstein action. However, it is also explicitly shown that on Einstein shell, the terms proportional to R_(μν)^2 and R^2 do not contribute to the amplitudes. This result implies that the effective graviton propagator is always non-ghost, a conclusion which remains valid for all higher orders. The calculations provide explicit diagrammatic verification of the field redefinition mechanism and of the fact that the exchange plus contact terms generated by the effective action yield the (expanded) string amplitudes.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0370-2693(86)90177-2DOIArticle
http://www.sciencedirect.com/science/article/pii/0370269386901772PublisherArticle
ORCID:
AuthorORCID
Deser, S.0000-0001-9285-9434
Additional Information:© 1986 Elsevier. Received 10 June 1986. Supported in part by NSF Grant PHY 82-01094. We thank C. Nunez for making her calculation of the four-point amplitude available to us. We have also benefitted from conversations with B. Zwiebach and one of us (S.D.) with C. Callan and D. Gross.
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Funding AgencyGrant Number
NSFPHY82-01094
Issue or Number:3-4
Record Number:CaltechAUTHORS:20161220-161054337
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161220-161054337
Official Citation:S. Deser, A.N. Redlich, String-induced gravity and ghost-freedom, Physics Letters B, Volume 176, Issues 3–4, 28 August 1986, Pages 350-354, ISSN 0370-2693, http://dx.doi.org/10.1016/0370-2693(86)90177-2. (http://www.sciencedirect.com/science/article/pii/0370269386901772)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73027
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:21 Dec 2016 17:35
Last Modified:03 Oct 2019 16:23

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