Natural Science Forum / Physics / Research / May 2008

I write this on behalf of my teacher who is writing a paper on quantum
optics to be published in one of the top peer-reviewed journals in the
field. Most of the numerical calculations have been done using
Mathematica 6.0. Would it be necessary to recode all of that in some

Hello Group,
it is known that the anomalous electric dipole moment is violating P-
symmetry. I wonder whether adding the term describing Pauli
interaction of anomalous magnetic dipole moment with electromagnetic

I'm just getting started on reading Polchinski, "String Theory", V 1,
and have run into something that leaves me totally lost. I've looked
at Polchinski's web site to see if there is, perhaps, a correction,
but found nothing pertinent. I have the 2005 printing of the book

Given that a massive boson interpolates between two gauge groups, the
one at m=0 and the one at m=infinity, I ask: which is the gauge group
for intermediate m? A quantum group? what else?
Alejandro

I submitted this question to sci.math.research but it was rejected for
being related to physics or computer science and not math perse.
I have been trying to classify data types in physics
http://www.densytics.com/wiki/index.php?title=Data_types_in_Physics

I hope someone here can help.  I got the idea to come here from a physics
faq page.  Is it possible to build a machine that runs only on gravity that
willl run forever?  Or is this considered perpetual motion--something I have
been told is impossible.  Is such a gravity run ...

Many arxiv papers state that the Planck length
is the smallest measureable length.
On the other hand, the gravitational length
L=2Gm/c^2

In the file linked below, I have written out a particular calculation of
a Gaussian integral, and would like to know if (6) in this file is is
correct.  (If link does not work, right click to download and then
open.)

I am trying to understand gauge theories in an algebraic setting
(I hope to avoid arguments over what setting is "better",...).
It seems that the basic construct is a combination of two algebras :
one algebra is the commutative algebra generated by the differentials

modified by UV/IR mxing.
In other words, the speaker claimed that the lowest energy is achived
not by zero momentum, but by non-zero momentum. Could somebody refer

I am trying to pinpoint the precise origins of the the term d/dJ which
appears as the argument in the potential V(d/dJ) in the so-called
"Central Identity of Quantum Field Theory," given on page 460 of Zee's
QFT in an Nutshell, and especially how one gets from V(x) --> V(d/dJ).

What is the mathematical relationship between Christoffel symbol and
connection A in Ashtekar variables?
Best,
Youngsub

It is well known that a Gaussian wavefunction, such as:
psi (x) = exp [Ax^2 + Bx}   (1)
has an uncertainty that satisfies the equality, not the inequality, in
the Heisenberg relationship, that is:

Dear Friends:
I am attempting to calculate the variance of a non-Gaussian
wavefunction:
psi(x) = exp [-(1/2)Ax^2-Bx]

http://www.space.com/php/video/player.php?video_id=150407Dark_matter
The above video is a narration about the finding of dark matter formed
in ring shape. Any folks know any possible explanation of the ring
shape.