Re: Sick and Tired of Inconsistencies
- From: Rock Brentwood <markwh04@xxxxxxxxx>
- Date: Tue, 10 Jun 2008 21:13:28 +0000 (UTC)
On Jun 10, 11:52 am, charleskm...@xxxxxxxxx wrote:
Classical gravity is insufficient to explain dark matter and
dark energy.
We don't know that. We don't even know how much of the divergence,
say, in galactic rotation curves is explained away by GR, in contrast
to Newtonian gravity (which is what's usually used to galactic
motion).
Never mind this, neither dark matter nor dark energy are deviations
from the law of gravity, as far as anyone knows. The best that anyone
knows is that they're deviations from the laws of matter: i.e., from
expectation on what ought to go on the *right* hand side of the field
equations; not the left.
Dark energy, for instance, may *already* be implied by gauge theory --
when coupled to gravity via a (non-trivial) fibre bundle . Number
one, the non-Abelianness of the gauge field already provides a
cosmological term -- one that's proportional to the square of the
coupling coefficients. It's also proportional to the gauge group
metric ... which provides the basis for a ready-made mechanism to
relax the cosmological "constant". The gradients of a variable gauge
group metric also provides other terms which generally fall under the
header of dark energy; yielding the effective equivalent of a scalar
field.
On top of that, we have seen emerge in recent years (months even) what
almost amounts to smoking gun evidence of dark matter -- optical
effects, themselves, seen in the space between galaxies, near
galaxies, for instance.
There are lots of ways to explain these things before jumping hastily
to the conclusion that the law of gravity is somehow at fault; and
it's hasty to say flat-out that there's something wrong with gravity.
.
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