Dark Matter as a Yukawa Like 5th force?

Click For Summary

Discussion Overview

The discussion revolves around the concept of dark matter potentially exhibiting a Yukawa-like repulsive force towards matter and itself. Participants explore the implications of this idea on the behavior of dark matter in various cosmic structures, including galaxies and globular clusters.

Discussion Character

  • Exploratory, Debate/contested

Main Points Raised

  • One participant proposes that dark matter could have a repulsive force described by a Yukawa potential, which might explain its distribution and behavior in galaxies.
  • Another participant references early cold dark matter (CDM) cosmology papers, suggesting that the proposed model could contradict established cold dark matter characteristics.
  • A participant questions the reasoning behind breaking the cold part, suggesting that the model could still allow for a WIMP cloud orbiting the galaxy while avoiding denser regions.
  • Further, a participant mentions self-interacting dark matter from a review article but clarifies that their idea is focused on a long-range 5th force that would not interact closely with the galaxy's core.

Areas of Agreement / Disagreement

The discussion contains multiple competing views, with no consensus reached on the validity of the Yukawa-like force model or its implications for dark matter theory.

Contextual Notes

Participants reference historical papers and concepts, indicating a reliance on specific definitions and frameworks within cosmology that may not align with the proposed ideas.

MTd2
Gold Member
Messages
2,019
Reaction score
25
Just an idea:

Suppose dark matter has a repulsive force towards matter and dark matter which follows a yukawa potential. It would be consistent with the lack of it in globular clusters, galactic center besides its clustering in galaxies. In case it touches matter, it would just cause an elastic recoil.

What do you think?
 
Astronomy news on Phys.org
Read the early papers on CDM cosmology in the 80's. Especially Blumenthal, faber, primack etc 84. And the other Primack papers.

Your idea, while creative, would break the C (cold) part.
 
Why breaking the cold part? :confused: It would be just WIMP cloud, orbiting the galaxy. Except that it would mostly avoid clusters of matter, like star systems, globular clusters but be located within the galaxy.
 
Thread locked pending moderation.

UPDATE/EDIT:
This thread will remain locked, as it runs against our policy on speculative posts.
 
Last edited:

Similar threads

Stargazing Dark matter and its effect on the orbit of stars
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Question of accuracy of galactic collision simulations
  • · Replies 11 ·
Replies
11
Views
2K
High School Dark matter not found in globular clusters orbiting MilkyWay
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Galactic collision and dark matter
  • · Replies 1 ·
Replies
1
Views
885
Undergrad Dark matter and old shell theorem
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad All current 'hints' towards Dark matter not being "matter"
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Questions regarding dark matter dynamics
  • · Replies 65 ·
3
Replies
65
Views
9K
High School Re-evaluating Dark Matter and Kepler's Law in Spiral Galaxies
  • · Replies 3 ·
Replies
3
Views
3K
High School Dark matter interactions other than gravity
  • · Replies 12 ·
Replies
12
Views
3K
Graduate How Does Dark Matter Affect Galaxy Motion and Formation?
  • · Replies 8 ·
Replies
8
Views
2K