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Has spacetime torsion already been detected in Lorentz and CPT tests with spin-polarised bodies?

2001/10/27 by L. C. García de Andrade, L. C. Garcia de Andrade, de Andrade, L. C. Garcia
Physics and Astronomy · #Classical mechanics #Coupling constant #Crystallography and Radiation Phenomena #FOS: Physical sciences #Gauge theory #High Energy Physics - Phenomenology (hep-ph) #Lorentz covariance #Lorentz transformation #Mathematical physics #Noncommutative and Quantum Gravity Theories #Physics #Quantum mechanics #Relativity and Gravitational Theory #Spacetime #Spinor #Theoretical physics #Torsion (gastropod) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0110361

Latex file

arxiv created 2001/10/27 · openalex publication_date 2001/10/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Bluhm-Kostelecky (BK) Lagrangian to test Lorentz violation with spin-polarised test bodies is shown to be transformed to a torsion-coupling constant Lagrangian by taking into account the Fock-Ivanenko coefficients in spinor form. In this way one is able to introduce torsion in their Lagrangian and make use of the value of their coupling constant to infer that torsion maybe observed in this type of spin-polarised body experiment.The theory would be a low-energy limit of a quasi-Riemannian gravity in Riemann-Cartan spacetime previously proposed by Gasperini.In this theory of gravity Lorentz local gauge symmetry is violated while global coordinate transformations are preserved.Torsion coupling obtained in this way could be as high as 10-29 GeV.

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