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Is that a swipe against the article? I think she would argue Dark Matter is so over parametrized it no longer makes meaningful predictions. And the argument t
by enkid 5y ago
Is that a swipe against the article? I think she would argue Dark Matter is so over parametrized it no longer makes meaningful predictions. And the argument that any new particle requires a new quantum field makes total sense. So Dark Matter is Modified Gravity, there's not clear distinction because of the need for new fields anyways. Of course, IANAP, so I could be totally misreading it.
- akvadrako 5y agoThe difference between dark matter and modified gravity is how it varies throughout space. Modified gravity is a formula that applies exactly at every point based on other mass, like Newtonian gravity F=G(m₁m₂)/r^2. The density of dark matter varies throughout space and it isn't based on a simple formula, but all the complicated dynamics of the past.
- Svoka 5y agoHow exactly Dark Matter is overparameterized? So far there was just constraints on what it could be from actual physical representation, not from what effects it has in terms of spacetime curvature.
- enkid 5y agoI'm not a physicist, I'm just trying to represent what's in the article.