Binghao Hu

Gravitational decoherence (GD) refers to the effects of gravity in actuating the classical appearance of a quantum system. Because the underlying processes involve issues in general relativity (GR), quantum field theory (QFT), and quantum information, GD has fundamental theoretical significance. There is a great variety of GD models, many of them involving physics that diverge from GR and/or QFT. This overview has two specific goals along with one central theme:(i) present theories of GD based on GR and QFT and explore their experimental predictions;(ii) place other theories of GD under the scrutiny of GR and QFT, and point out their theoretical differences. We also describe how GD experiments in space in the coming decades can provide evidence at two levels:(a) discriminate alternative quantum theories and non-GR theories;(b) discern whether gravity is a fundamental or an effective theory.

In order to demonstrate the existence of the god, Plato introduces an investigation into the kinds of movement in the Laws X. This research begins obviously with the circular movement and the local movement of the Platonic Polyhedrons, follows with their combination, separation, growth and decay that result in the generation and destruction of the four elements and all perceptible things, and ends with the corporeal movement that encompasses the preceding eight elemental motion-types, and the motion of the soul, which is proclaimed to be the self-motion. Given that the self-motion is caused by the intellect and functions as the principle and reason of all physical movements in the χώρα, the soul is deemed to be divine, in this sense the existence of the god is demonstrated.