TY  - JOUR
A1  - Vasak, David
A1  - Kirsch, Johannes
A1  - Struckmeier, Jürgen
A1  - Stöcker, Horst
T1  - On the cosmological constant in the deformed Einstein–Cartan gauge gravity in De Donder–Weyl Hamiltonian formulation
T2  - Astronomische Nachrichten = Astronomical notes
N2  - A modification of the Einstein–Hilbert theory, the Covariant Canonical Gauge Gravity (CCGG), leads to a cosmological constant that represents the energy of the space–time continuum when deformed from its (A)dS ground state to a flat geometry. CCGG is based on the canonical transformation theory in the De Donder–Weyl (DW) Hamiltonian formulation. That framework modifies the Einstein–Hilbert Lagrangian of the free gravitational field by a quadratic Riemann–Cartan concomitant. The theory predicts a total energy-momentum of the system of space–time and matter to vanish, in line with the conjecture of a “Zero-Energy-Universe” going back to Lorentz (1916) and Levi-Civita (1917). Consequently, a flat geometry can only exist in presence of matter where the bulk vacuum energy of matter, regardless of its value, is eliminated by the vacuum energy of space–time. The observed cosmological constant Λobs is found to be merely a small correction attributable to deviations from a flat geometry and effects of complex dynamical geometry of space–time, namely torsion and possibly also vacuum fluctuations. That quadratic extension of General Relativity, anticipated already in 1918 by Einstein, thus provides a significant and natural contribution to resolving the “cosmological constant problem”.
KW  - quadratic-linear gravity
KW  - De Donder-Weyl Hamiltonian formulation
KW  - covariant canonical gauge theory of gravity
KW  - zero-energy universe
KW  - inertia of space–time
KW  - cosmological constant
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/86295
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-862954
SN  - 1521-3994
VL  - 344.2023
IS  - 1-2, e220069
PB  - Wiley-VCH
CY  - Berlin
ER  -