Low-redshift constraints on covariant canonical Gauge theory of gravity

  • Constraints on the Covariant Canonical Gauge Gravity (CCGG) theory from low-redshift cosmology are studied. The formulation extends Einstein’s theory of General Relativity (GR) by a quadratic Riemann–Cartan term in the Lagrangian, controlled by a “deformation” parameter. In the Friedman universe this leads to an additional geometrical stress energy and promotes, due to the necessary presence of torsion, the cosmological constant to a time-dependent function. The MCMC analysis of the combined data sets of Type Ia Supernovae, Cosmic Chronometers and Baryon Acoustic Oscillations yields a fit that is well comparable with the ΛCDM results. The modifications implied in the CCGG approach turn out to be subdominant in the low-redshift cosmology. However, a non-zero spatial curvature and deformation parameter are shown to be consistent with observations.

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Author:David BenistyORCiD, David VasakORCiD, Johannes Kirsch, Jürgen StruckmeierORCiDGND
Parent Title (English):The European physical journal. C, Particles and fields
Place of publication:Berlin ; Heidelberg
Document Type:Article
Date of Publication (online):2021/02/05
Date of first Publication:2021/02/05
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/10/02
Article Number:art. 125
Page Number:9
Institutes:Physik / Physik
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0