Nonunitary Newtonian Gravity Makes Semiclassical Gravity Viable for All Practical Purposes

Abstract

Semiclassical Gravity replaces the energy momentum tensor $T_{\mu \nu }$ with its expectation value $⟨T_{\mu \nu }⟩$ in Einstein equations, this making the Einstein tensor $G_{\mu \nu }$ a classical variable thus avoiding the quantization of the gravitational field. Jointly with the Copenhagen interpretation of QM, Semiclassical Gravity gives rise to cases of Superluminal Communication. It is shown in a specific instance that a model of Nonunitary Newtonian Gravity avoids Superluminal Communication by decohering linear superpositions of macroscopically distinct states, namely Schrodinger's cats.

References in corpus (2)

• Nonunitary HD gravity classically equivalent to Einstein gravity and its Newtonian limit
• Numerical simulation of nonunitary gravity-induced localization

Cited by in corpus (1)

• Einstein, Planck and Vera Rubin: relevant encounters between the Cosmological and the Quantum Worlds