From: Anders Sandberg (asa@nada.kth.se)
Date: Wed Aug 06 2003 - 13:24:57 MDT
The original article is
http://arxiv.org/abs/astro-ph/0301184
The phase coherence of light from extragalactic sources -
direct evidence against first order Planck scale fluctuations
in time and space Richard Lieu, Lloyd W. Hillman
I really like this experiment. I do not have the time to go
through the paper carefully, but they seem to get that c is
exact to 1:10^32. This is good, but the Planck time is
5.4*10^-44, so they seem to be a few orders of magnitude away.
However, if the quantization is not assumed to be random but
regular in some way (like in a cellular automaton) then the
problem disappears.
On Wed, Aug 06, 2003 at 01:06:25PM -0400, matus wrote:
>
> I found this quite surprising. Surprising, first of all, that time
> might not be quantized, since space, energy, momentum all are.
If time isn't quantized, space isn't quantized either. You can
always rotate them into each other by a Lorenz transformation.
Hmm, I wonder if this could be used to do some kind of
gravitational ultraviolet catastrophy?
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