Abstract
The main features of how to build a Born’s Reciprocal Gravitational theory in curved phase-spaces are developed. By recurring to the nonlinear connection formalism of Finsler geometry a generalized gravitational action in the 8D cotangent space (curved phase space) can be constructed involving sums of 5 distinct types of torsion squared terms and 2 distinct curvature scalars \({\mathcal{R}}, {\mathcal{S}}\) which are associated with the curvature in the horizontal and vertical spaces, respectively. A Kaluza-Klein-like approach to the construction of the curvature of the 8D cotangent space and based on the (torsionless) Levi-Civita connection is provided that yields the observed value of the cosmological constant and the Brans-Dicke-Jordan Gravity action in 4D as two special cases. It is found that the geometry of the momentum space can be linked to the observed value of the cosmological constant when the curvature in \(\mathit{momentum}\) space is very large, namely the small size of P is of the order of \(( 1/R_{\mathit{Hubble}})\). Finally we develop a Born’s reciprocal complex gravitational theory as a local gauge theory in 8D of the \(\mathit{deformed}\) Quaplectic group that is given by the semi-direct product of U(1,3) with the \(\mathit{deformed}\) (noncommutative) Weyl-Heisenberg group involving four \(\mathit{noncommutative}\) coordinates and momenta. The metric is complex with symmetric real components and antisymmetric imaginary ones. An action in 8D involving 2 curvature scalars and torsion squared terms is presented.
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We thank M. Bowers for very kind assistance.
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Castro, C. Born’s Reciprocal Gravity in Curved Phase-Spaces and the Cosmological Constant. Found Phys 42, 1031–1055 (2012). https://doi.org/10.1007/s10701-012-9645-9
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DOI: https://doi.org/10.1007/s10701-012-9645-9