Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity · HackerPapers discussions

Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity — mentioned by eigenket

Wed, 13 Mar 2024 12:10:23 GMT

I don't think its premature when we have stuff like the model of Oppenheim et. al. which appears to predict stuff which we can observe from astronomical data. This paper [1] also discusses some experimental tests of their model which are not too technologically insane (you don't have to put a planet in superposition). Pars of the parameter space of their model are already ruled out by stuff we already know and more can be excluded with a combination of deriving better theoretical bounds (their analysis is quite coarse to simplify things) and better experiments. I don't think its very…

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Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity — mentioned by eigenket

Sat, 09 Mar 2024 13:04:18 GMT

I agree with your point in general, but in this case specifically I strongly disagree. The idea worked out by Oppenheim and his colleagues/students is a fairly concrete theory which aims to marry quantum mechanics and general relativity. They're working on a bunch of approaches to turn their model into testable predictions in different regimes. They have a bunch of different papers with different ways their model could be falsified. None of them are at the level where you could falsify their model with current technology but they're seriously working on the theory required to make their ideas…

Paper and discussion history. A mention is not an endorsement.

Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity — mentioned by defrost

Tue, 05 Dec 2023 05:48:49 GMT

Jonathan Oppenheim: If you'd like to attend a public lecture (virtual or in London) about the postquantum theory of classical gravity, or contribute a donation to the group's research program, click "Donate" to add your email address to our list. https://www.ucl.ac.uk/oppenheim/ https://www.ucl.ac.uk/oppenheim/research.html See Also: Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity (March 2022) https://arxiv.org/pdf/2203.01982.pdf Is it time to rethink quantum gravity? (March 2023) https://arxiv.org/pdf/2310.12221.pdf

Paper and discussion history. A mention is not an endorsement.