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Some simple theories of gravity with propagating torsion

Yusuke Mikura
•
Vincenzo Naso
•
Roberto Percacci
2024
  • journal article

Periodico
PHYSICAL REVIEW D
Abstract
We consider antisymmetric metric-affine theories of gravity with a Lagrangian containing the most general terms up to dimension four and search for theories that are ghost- and tachyon-free when expanded around flat space. We find new examples that propagate only the graviton and one other massive degree of freedom of spin zero, one, or two. These models require terms of the form (∇T)2 in the Lagrangian, that have been largely ignored in the literature.
DOI
10.1103/PhysRevD.109.104071
WOS
WOS:001239450100005
Archivio
https://hdl.handle.net/20.500.11767/147550
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85195061550
https://arxiv.org/abs/2312.10249
https://ricerca.unityfvg.it/handle/20.500.11767/147550
Diritti
closed access
license:non specificato
license uri:na
google-scholar
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