Is Gravity Actually the Result of Quantum Collapses?

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The discussion centers on the Ghirardi-Rimini-Weber (GRW) model as modified by Antoine Tilloy, which posits that gravity results from quantum collapses in the wave function rather than being a fundamental spin-2 field or spacetime curvature. This semi-classical theory introduces new predictions, including the non-attraction of particles to themselves and a cut-off in the Newtonian gravitational potential at short distances (≲10−7m). The model is experimentally falsifiable and suggests that gravity may be an emergent property of the other three fundamental forces and quantum wave function collapse, diverging from traditional general relativity. Further research is necessary to extend these theories convincingly to general relativity.

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the news are reporting this paper

Ghirardi-Rimini-Weber model with massive flashes
Antoine Tilloy
(Submitted on 12 Sep 2017)
We introduce a modification of the Ghirardi-Rimini-Weber (GRW) model in which the flashes (or collapse space-time events) source a classical gravitational field. The resulting semi-classical theory of Newtonian gravity preserves the statistical interpretation of quantum states of matter in contrast with mean field approaches. It can be seen as a discrete version of recent proposals of consistent hybrid quantum classical theories. The model seems to be in agreement with known experimental data and introduces new falsifiable predictions: (1) particles do not attract themselves, (2) the 1/r gravitational potential of Newtonian gravity is cut-off at short (≲10−7m) distances, and (3) gravity makes spatial superpositions decohere at a rate inversely proportional to that coming from the vanilla GRW model. Together, the last two predictions make the model experimentally falsifiable for all values of its parameters.
Comments: 10 pages
Subjects: Quantum Physics (quant-ph); General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:1709.03809 [quant-ph]
(or arXiv:1709.03809v1 [quant-ph] for this version)

what is called gravity is the result of quantum collapses in the wave function.

so gravity isn't a fundamental spin-2 field which when quantized gives gravitons, nor spacetime curvature

but quantum collapses in the wave function of particles.

comments? maybe there is no "unification" of gravity with the other 3 forces, in terms of gravitons, gravity is simply the emergent property of a system of the other 3 forces and quantum wave function collapse.
 
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But this has nothing to do with general relativity, it is all about Newtonian gravity. That is until the last sentence where he says

"If semi-classical theories of the type presented here can be extended to general relativity in a convincing way and if robust criteria can be found to make them less ad hoc (see e.g. [5]), then further hope will be warranted."​
 
more research is needed, but the underlying idea seems plausible
 

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