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Panel 8 - Dark Matter and Dark Energy Alternatives
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| Authors |
Affiliation |
Title |
Abstract |
|
Philip Mannheim |
Physics Dept., U. of Connecticut, Storrs CT, USA |
Does the cosmological constant problem presage a
paradigm shift in gravitational theory? |
We review the challenges presented by the cosmological
constant and quantum gravity problems, and discuss
whether they might presage a paradigm shift in
gravitational theory. We discuss what form such a
paradigm shift might take, with particular consideration
being given to conformal gravity. |
|
Chuck Gallo & James Feng |
Superconix, Lake Elmo MN, USA |
Ordinary Dark Matter versus Mysterious Dark Matter in
Galactic Rotation |
To theoretically describe the
measured rotational velocities of spiral galaxies,
we assume Newtonian gravity/dynamics and successfully
find (via computer) mass distributions in bulge/disk
configurations that duplicate the measured rotational
velocities. NO speculations re Gravity Deviations NOR
“Massive Peripheral Spherical Halos of Mysterious Dark
Matter” are necessary. However, there exists ordinary
Dark Matter
within galactic disk distributed towards the cooler
periphery. |
|
Ram Gopal Vishwakarma |
Zacatecas Univ., MEXICO |
Does Dark Energy Signal a Wrong Physics? |
The mysterious `dark energy' needed to explain the
recent observations, poses a serious confrontation
between fundamental physics and cosmology. Recently it
has been discovered (by the author) that the present
crisis appears due to an error in the formulations of
the perfect fluid which is used to model the matter
contents (including dark energy) in the Universe. It
should be noted that this aspect of the theories of
gravitation has remained untested. An experiment, to
test this feature, has also been proposed. |
|
Robin Booth |
Insular Inst., Brentford, Middlesex, U.K. |
Machian General Relativity – a possible solution to the
Dark Energy problem? |
A cosmological model based on Machian General Relativity
is described. This is shown to give rise to a universe
in which the cosmic scale factor increases linearly over
time. The resultant dynamics are able to account for the
apparent acceleration in the rate of expansion of the
universe, without the need for a cosmological constant. |
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