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From: Osher Doctorow on 30 Jul 2010 01:27
From Osher Doctorow

Of considerable interest arguably is "Dark Fluid" theory, which has 57
papers in arXiv (5 in 2010, 9 in 2009, 6 in 2008, 9 in 2007, 6 in
2006, 6 in 2005, and fewer in each of 2004, 2003, 2002, 2000, 1999,
1994).

See:

1) "Dark Fluid," Wikipedia.

2) arXiv papers on Dark Fluid (57 of them), including Alexandre Arbey
of U. Lyon, "The unifying dark fluid model," arXiv: 0911.3163 v1
[astro-ph.CO] 16 Nov 2009, 8 pages.

Dark Fluid is a combination of Dark Energy (at cosmological scales)
and Dark Matter (at local scales including galaxies and clusters of
galaxies but not larger regions of matter) with complex scalar fields
phi whose potential V(phi) is given for example (see Arbey) by:

3) V(phi) = m^2 |phi|^2 + Aexp(-B|phi|)^2

with the first term on the right hand side being Dark Matter
(especially for galaxies and the early Universe where the field
density was large enough) and the second term on the right hand side
being Dark Energy (in small density regions, where we get Repulsive
vacuum energy-like behavior).

A modification by Arbey (2009) is:

4) V(phi) = m^2 phi* phi + a exp(-b phi* phi) (* is used here for
Arbey's dagger symbol, the usual Hermitian conjugate)

and Arbey points out an interest new potential:

5) V(phi) = a cotanh(b/(phi* phi))

which has an advantage over (4) of finding roots in brane theories but
otherwise has similar behavior to equation (4).

The roles of Strong, Weak, Electromagnetic, and Gravitational
Interactions in the above need to arguably be disentangled, and need
to be related to the research on the following topics in arXiv:

6) "Gluon plasma" (657 papers, including "Quark-Gluon Plasma")

7) "Quark matter" (589 papers).

8) "Strange [quark] matter," 137 papers.

as well as Wikipedia's:

9) "Strange matter" [a particular case of Quark Matter]

10) "QCD matter"

11) "Quark Star".

12) "Dark Matter".

Osher Doctorow

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