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It's not clear that GR would need to be tweaked to match MOND. The GR solutions we currently use in LCDM are based on the FLRW metric, but that metric could jus
by naasking 2y ago
It's not clear that GR would need to be tweaked to match MOND. The GR solutions we currently use in LCDM are based on the FLRW metric, but that metric could just be the wrong fit for our universe.
- mr_mitm 2y agoHow is it not clear? GR reduces to Newtonian gravity in the weak field limit, which MOND is explicely not. If MOND is true, then GR is wrong.
- throwawaymaths 2y agoHave some nuance. GR is already known to be "wrong" since it isn't reconcilable with QM. If any given MOND is true, GR needs some (possibly minor) changes in the limit, just as GR needs (possibly minor) changes to accommodate QM