Soft-collinear gravity beyond the leading power

A bstract We construct “soft-collinear gravity”, the effective field theory which describes the interaction of collinear and soft gravitons with matter (and themselves), to all orders in the soft-collinear power expansion. Despite the absence of collinear divergences in gravity at leading power, the...

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Bibliographic Details
Published in:The journal of high energy physics 2022-03, Vol.2022 (3), p.80-72, Article 80
Main Authors: Beneke, Martin, Hager, Patrick, Szafron, Robert
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Effective Field Theories
Elementary Particles
Field theory
Gauge Symmetry
Gravitons
Gravity
High energy physics
Inhomogeneity
Invariants
Physics
Physics and Astronomy
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Symmetry
Tensors
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Summary:A bstract We construct “soft-collinear gravity”, the effective field theory which describes the interaction of collinear and soft gravitons with matter (and themselves), to all orders in the soft-collinear power expansion. Despite the absence of collinear divergences in gravity at leading power, the construction exhibits remarkable similarities with soft-collinear effective theory of QCD (gauge fields). It reveals an emergent soft background gauge symmetry, which allows for a manifestly gauge-invariant representation of the interactions in terms of a soft covariant derivative, the soft Riemann tensor, and a covariant generalisation of the collinear light-cone gauge metric field. The gauge symmetries control both the unsuppressed collinear field components and the inherent inhomogeneity in λ of the invariant objects to all orders, resulting in a consistent expansion.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2022)080