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Unraveling conformal gravity amplitudes
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Uppsala Univ, Dept Phys & Astron, S-75108 Uppsala, Sweden.;Stockholm Univ, NORDITA, Roslagstullsbacken 23, S-10691 Stockholm, Sweden.
Uppsala Univ, Dept Phys & Astron, S-75108 Uppsala, Sweden..
Uppsala Univ, Dept Phys & Astron, S-75108 Uppsala, Sweden..
2018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 9, article id 080Article in journal (Refereed) Published
Abstract [en]

Conformal supergravity amplitudes are obtained from the double-copy construction using gauge-theory amplitudes, and compared to direct calculations starting from conformal supergravity Lagrangians. We consider several different theories: minimal N = 4 conformal supergravity, non-minimal N = 4 Berkovits-Witten conformal supergravity, mass-deformed versions of these theories, as well as supersymmetry truncations thereof. Coupling the theories to a Yang-Mills sector is also considered. For all cases we give the gravity Lagrangians that the double copy implicitly generates. The two main results are: we determine a Lagrangian for the non-minimal Berkovits-Witten theory, and we uncover the double-copy prescription for the minimal N = 4 conformal supergravity.

Place, publisher, year, edition, pages
Springer, 2018. no 9, article id 080
Keywords [en]
Scattering Amplitudes, Conformal Field Theory, Supergravity Models
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-235437DOI: 10.1007/JHEP09(2018)080ISI: 000444680500001Scopus ID: 2-s2.0-85053292284OAI: oai:DiVA.org:kth-235437DiVA, id: diva2:1251435
Funder
Swedish Research Council, 621-2014-5722Knut and Alice Wallenberg Foundation, KAW 2013.0235Ragnar Söderbergs stiftelse, S1/16
Note

QC 20180927

Available from: 2018-09-27 Created: 2018-09-27 Last updated: 2018-10-02Bibliographically approved

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