Rigorous derivation of dark energy and inflation as geometry effects in Covariant Canonical Gauge Gravity

  • The cosmological implications of the Covariant Canonical Gauge Theory of Gravity (CCGG) are investigated. CCGG is a Palatini theory derived from first principles using the canonical transformation formalism in the covariant Hamiltonian formulation. The Einstein-Hilbert theory is thereby extended by a quadratic Riemann-Cartan term in the Lagrangian. Moreover, the requirement of covariant conservation of the stress-energy tensor leads to necessary presence of torsion. In the Friedman universe that promotes the cosmological constant to a time-dependent function, and gives rise to a geometrical correction with the EOS of dark radiation. The resulting cosmology, compatible with the ΛCDM parameter set, encompasses bounce and bang scenarios with graceful exits into the late dark energy era. Testing those scenarios against low-z observations shows that CCGG is a viable theory.
Author:David VasakORCiD, Johannes Kirsch, Jürgen StruckmeierORCiDGND
Parent Title (English):Astronomische Nachrichten = Astronomical notes
Publisher:Wiley-VCH Verl.
Place of publication:Berlin
Document Type:Article
Date of Publication (online):2021/01/26
Date of first Publication:2021/01/26
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/03/16
Tag:Friedman equation; Palatini; cosmological constant; dark energy; extended Einstein gravity; gauge theory; gravitation; quadratic Lagrangian; torsion
Page Number:8
First Page:81
Last Page:88
This work has been supported by the Walter Greiner Gesellschaft zur Förderung der physikalischen Grundlagenforschung e.V., and carried out in collaboration with the Goethe University Frankfurt, Ben Gurion University of the Negev Beer Sheva, and with GSI Darmstadt. D. V. and J. K. especially thank the Fueck-Stiftung for support.
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften
5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0