Krasnodar Research Institute of Storage and Processing of Agricultural Products

Sharp scalar positivity in two-coupling postquantum classical gravity: de Sitter classification, FLRW stability, and a calibration-free covariance test

A covariant postquantum classical-gravity path integral uses a two-coupling generalized DeWitt kernel to suppress departures from Einstein's equation. Retaining the cosmological term already present in the covariant action, this preprint classifies the complete Newtonian-gauge sc...

Sharp scalar positivity in two-coupling postquantum classical gravity: de Sitter classification, FLRW stability, and a calibration-free covariance test

A covariant postquantum classical-gravity path integral uses a two-coupling generalized DeWitt kernel to suppress departures from Einstein's equation. Retaining the cosmological term already present in the covariant action, this preprint classifies the complete Newtonian-gauge sc...