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1
vote
2answers
63 views

proportion of dark matter/energy to other matters/energy at the beginning of the universe

How will the proportion of dark matter/energy to other matters/energy be like at the momenets after the beginning of the universe (standard Big Bang model)?
2
votes
1answer
63 views

Do WIMPs have to interact non-gravitationally with each other or other particles?

I know many collaborations are attempting to detect the interaction of WIMPs with nucleons or with themselves, with the recent result from Ice Cube ...
26
votes
0answers
504 views

What is the upper-limit on intrinsic heating due to dark matter?

Cold dark matter is thought to fill our galactic neighborhood with a density $\rho$ of about 0.3 GeV/cm${}^3$ and with a velocity $v$ of roughly 200 to 300 km/s. (The velocity dispersion is much ...
2
votes
0answers
58 views

Remaining Potential Experimental Particle Physics Discoveries at the TeV Scale?

With the discovery of the Higgs Boson, some have been calling it the end of experimental particle physics for our generation, due to the fact that all of the particles predicted by the standard model ...
2
votes
0answers
117 views

Particle dark matter coherent scattering?

Particle dark matter coherent scattering direct searches rely on the scattering of the DM particle off a nucleus (Xe, Si, Ge, NaI etc). The wisdom is this is coherent scattering: so the rate ~atomic ...
0
votes
0answers
45 views

Flung out of the galaxy

I watched a video by Dr. Michio Kaku, in which he states a theory about Dark Matter. This theory says that Dark Matter could be just ordinary matter from another parallel universe, which would be ...
0
votes
0answers
36 views

Vlasov equation in Liddle and Lyth or Dodelson's book

I am concerned about equations 2, 5 and 6 on page 2 of arXiv:astro-ph/0606028. The paper refers them to the book by Peebles which I don't have access to at this point. I believe that these ...