Natural Science Forum / Physics / Research / January 2007

At first I thought sci.physics or sci.physics.particle were better
places for this, but all the unmoderated groups in this block seem
hopelessly clogged with the rantings of the mentally ill.  I posted to
sci.physics, but I'm posting here as well.

I have some statements and conclusions here that I wanted to have
checked by the physics gurus. Just because the conclusions seem to make
sense in some way, but that there could be reasons for which they are
simply plain wrong.

I was going through R. Brandernberger's talk at the KITP workshop on
singularities which is at
http://online.kitp.ucsb.edu/online/singular_m07/brandenberger/
One thing he said somewhere in teh middle is that Eternal inflation

It is well known that the Feynman Path integral and the canonical
approaches to QM are equivalent in the sense that if both can be
applied to a particular situation, they yield the same prediction.
I am interested in finding out whether this equivalence can be found in

Just been re-reading Tipler's book.
Assuming we lived in a closed universe, could the computing power
available at the Big Crunch be enough to simulate realities (the current
visible universe) to an arbitrary degree of precision ie down to the

Can anyone here give a knowledgeable appreciation of
this Nature's paper?
"Resonance effects indicate a radical-pair mechanism
for avian magnetic compass"

I had tried to publish this paper in several journals a while back and
was unsuccessful. I think it would be an important result if there was
no mistake in the math (there are some tricky order of limits issues).
No reviewer ever bothered to read it in detail and noone ever found an

A while ago someone asked on s.p.relativity how a black hole can accelerate
in a gravitational field, given that the round trip time to the event
horizon is infinite. This seems easy enough to understand -- given that
there's no background metric, what else could it do? But I ...

In January 1998, there was a brief discussion of an early version of the
Grand Unified Theory of Randell L. Mills.   His theory has now grown
into a large book that covers much of chemistry, physics, astronomy, and
cosmology.

For my diploma thesis I must provide a calculation that reproduces the
results given on page 46 of the paper hep-ph/0309342 . For those who do
not want to look it up, I briefly explain what it is about: It concerns
the two-body scattering processes

MIT physicist/astronomer is quite fun to what lecture. In lectures 20
and 16 of his online basic E&M lectures he makes some interesting
points. I will tell you about both of them and ask your opinions but
notice that the second one I mention (which actually comes first in

Let ne start with a quote from wikipedia
"From a microscopic perspective, in statistical thermodynamics the
entropy is a measure of the number of microscopic configurations that
are capable of yielding the observed macroscopic description of the

There is today a rather strange situation about the behavior of the
gluon propagator in the infrared. Some people using Dyson-Schwinger
(DS) equation claim that this should go to zero in the limit of
momentum going to zero while lattice computations are now starting to

Consider an expanding sphere of shrapnel which propagates at speed v
from the source of an explosion.
If the trajectories of shrapnel particles a and b are separated by an
angle theta, what is the velocity of particle b relative to particle a?

Ultimately this is in reference to a thread that came up in 1993 April
Re: Feynman and mathematics
sci.math, sci.physics
http://groups.google.com/group/sci.physics/msg/87a5353d6a2ae74e