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Physics
Beyond the Standard Models
LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena
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[QUOTE="wumbo, post: 6832697, member: 731720"] Not entirely. Linearized EFE includes the gravitomagnetism bit that also has a pretty decent influence. See [URL='https://arxiv.org/pdf/gr-qc/0311030.pdf']this explanation[/URL]. In short, it's suppressed by a factor of 1/c^2 and would otherwise be negligible, but there's a wrench in the works since it changes the characteristics of the PDEs critically (hyperbolic to elliptic). Hence the ask for numerical relativity simulations of the whole EFE as a tiebreaker. I mean, yeah, that's the point of scientific debate right? The difference here is that the math is easy and the argument are comprehensible to anyone with PDE and perturbation theory experience. You don't need to be an expert on general relativity to work through the argument, which is unusual. FWIW, the standard derivation of linearized gravity is very cavalier about declaring terms negligible and needs more rigor. Ciotti's paper is correct nevertheless, see the November 2022 response that agrees but makes the point that he didn't consider relevant homogeneous solutions which matter. [/QUOTE]
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Beyond the Standard Models
LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena
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