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Heterotic and bosonic string amplitudes via field theory
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Uppsala University, Sweden.
Number of Authors: 42018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 10, article id 012Article in journal (Refereed) Published
Abstract [en]

Previous work has shown that massless tree amplitudes of the type I and IIA/B superstrings can be dramatically simplified by expressing them as double copies between field-theory amplitudes and scalar disk/sphere integrals, the latter containing all the alpha'-corrections. In this work, we pinpoint similar double-copy constructions for the heterotic and bosonic string theories using an alpha'-dependent field theory and the same disk/sphere integrals. Surprisingly, this field theory, built out of dimension-six operators such as (D mu F mu v)(2), has previously appeared in the double-copy construction of conformal supergravity. We elaborate on the alpha' -> infinity limit in this picture and derive new amplitude relations for various gauge-gravity theories from those of the heterotic string.

Place, publisher, year, edition, pages
2018. no 10, article id 012
Keywords [en]
Bosonic Strings, Scattering Amplitudes, Superstrings and Heterotic Strings
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-161990DOI: 10.1007/JHEP10(2018)012ISI: 000446567000005OAI: oai:DiVA.org:su-161990DiVA, id: diva2:1264474
Available from: 2018-11-20 Created: 2018-11-20 Last updated: 2018-11-20Bibliographically approved

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