Gravitational Decoherence, Alternative Quantum Theories and Semiclassical Gravity

摘要

In this report we discuss three aspects: 1) Semiclassical gravity theory(SCG): 4 levels of theories describing the interaction of quantum matter withclassical gravity; 2) Alternative Quantum Theories: Discerning those which arederivable from general relativity (GR) plus quantum field theory (QFT) fromthose which are not; 3) Gravitational Decoherence: Derivation of a masterequation and examination of the assumptions which led to the claims ofobservational possibilities. We list three sets of corresponding problemsworthy of pursuit: a) Newton-Schr\"odinger Equations in relation to SCG; b)Master equation of gravity-induced effects serving as discriminator of 2); andc) Role of gravity in macroscopic quantum phenomena.