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research article

Scale and Weyl invariance in Einstein-Cartan gravity

Karananas, Georgios K.
•
Shaposhnikov, Mikhail  
•
Shkerin, Andrey
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December 15, 2021
Physical Review D

We show how Einstein-Cartan gravity can accommodate both global scale and local scale (Weyl) invariance. To this end, we construct a wide class of models with nonpropagating torsion and a nonminimally coupled scalar field. In phenomenological applications the scalar field is associated with the Higgs boson. For global scale invariance, an additional field-dilaton-is needed to make the theory phenomenologically viable. In the case of the Weyl symmetry, the dilaton is spurious and the theory reduces to a subclass of one-field models. In both scenarios of scale invariance, we derive an equivalent metric theory and discuss possible implications for phenomenology.

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Type
research article
DOI
10.1103/PhysRevD.104.124014
Web of Science ID

WOS:000728960300019

Author(s)
Karananas, Georgios K.
Shaposhnikov, Mikhail  
Shkerin, Andrey
Zell, Sebastian  
Date Issued

2021-12-15

Publisher

American Physical Society

Published in
Physical Review D
Volume

104

Issue

12

Article Number

124014

Subjects

Astronomy & Astrophysics

•

Physics, Particles & Fields

•

Physics

•

conformal-invariance

•

standard model

•

gauge-theory

•

higgs

•

symmetry

•

inflation

•

cosmology

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

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Available on Infoscience
January 15, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/184544
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