Heterotic and bosonic string amplitudes via field theory

被引：0
作者：
Thales Azevedo
Marco Chiodaroli
Henrik Johansson
Oliver Schlotterer
机构：
[1] Uppsala University,Department of Physics and Astronomy
[2] Nordita,undefined
[3] Stockholm University and KTH Royal Institute of Technology,undefined
[4] Max-Planck-Institut für Gravitationsphysik,undefined
[5] Albert-Einstein-Institut,undefined
[6] Perimeter Institute for Theoretical Physics,undefined
来源：
Journal of High Energy Physics | / 2018卷
关键词：
Bosonic Strings; Scattering Amplitudes; Superstrings and Heterotic Strings;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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 α′-corrections. In this work, we pinpoint similar double-copy constructions for the heterotic and bosonic string theories using an α′-dependent field theory and the same disk/sphere integrals. Surprisingly, this field theory, built out of dimension-six operators such as (DμFμν)2, has previously appeared in the double-copy construction of conformal supergravity. We elaborate on the α′ → ∞ limit in this picture and derive new amplitude relations for various gauge-gravity theories from those of the heterotic string.
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