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A cosmology without dark matter (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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I haven't found anything calling this crank science, although it does make some rather sweeping claims. One is that dark matter does not exist, and another is that the universe is 27 billion years old.

https://phys.org/news/2024-03-universe-dark.html

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[–] [email protected] 1 points 1 year ago (1 children)

I mean, it doesn't have to relate to a particle. Lambda is also associated with a property of space itself.

[–] [email protected] 2 points 1 year ago

Well... And so can scalars, sure, like in string theory where scalar fields represent various kinds of aspects of geometry of the extra dimensions. But they are, also this scalar, dynamical fields (which the CC is not) and these fields would correspond to "particles". You couple this field to all the other fields of the SM and you get interactions, you have particles. Its a particle.

This is why I know this is generally a problem, in string theory you have all these scalars that comes from compactification, you need to explain why they are not seen by experiments = make them heavy. Otherwise you get new particles, new forces, lots of physics that is not real.