TY  - JOUR
A1  - Benisty, David
A1  - Vasak, David
A1  - Kirsch, Johannes
A1  - Struckmeier, Jürgen
T1  - Low-redshift constraints on covariant canonical Gauge theory of gravity
T2  - The European physical journal. C, Particles and fields
N2  - 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.
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/70123
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-701238
SN  - 1434-6052
SN  - 1434-6044
VL  - 81
IS  - 125
PB  - Springer
CY  - Berlin ; Heidelberg
ER  -