Soft-collinear gravity with fermionic matter

A bstract We extend the effective field theory for soft and collinear gravitons to interactions with fermionic matter fields. The full theory features a local Lorentz symmetry in addition to the usual diffeomorphisms, which requires incorporating the former into the soft-collinear gravity framework....

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Bibliographic Details
Published in:The journal of high energy physics 2023-03, Vol.2023 (3), p.76-27, Article 76
Main Authors: Beneke, Martin, Hager, Patrick, Schwienbacher, Dominik
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Coordinate transformations
Effective Field Theories
Elementary Particles
Factorization
Fermions
Field theory
Gauge Symmetry
Gravitons
Gravity
High energy physics
Isomorphism
Multipoles
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Renormalization Group
String Theory
Symmetry
Tensors
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Summary:A bstract We extend the effective field theory for soft and collinear gravitons to interactions with fermionic matter fields. The full theory features a local Lorentz symmetry in addition to the usual diffeomorphisms, which requires incorporating the former into the soft-collinear gravity framework. The local Lorentz symmetry gives rise to Wilson lines in the effective theory that strongly resemble those in SCET for non-abelian gauge interactions, whereas the diffeomorphisms can be treated in the same fashion as in the case of scalar matter. The basic structure of soft-collinear gravity, which features a homogeneous soft background field, giving rise to a covariant derivative and multipole-expanded covariant Riemann-tensor interactions, remains unaltered and generalises in a natural way to fermion fields.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2023)076