Natural Science Forum / Physics / Research / January 2008

The theoretical physics FAQ at
        http://www.mat.univie.ac.at/~neum/physics-faq.txt
contains answers to some more or less frequently asked
questions from theoretical physics. Starting in 2004, the topics

In his 1968 paper on the structure of Kerr fields, B. Carter using the
separability of the Jacobi action found a 4th constant of motion
allowing to determine the geodesic motion in such space time.
For setting the system of the four relevant differential equations  he

If we add energy, E, to a stationary ground state atom of mass, M, to
produce an excited state the mass of the atom is increased to M + E/
c^2.  We all accept that the added potential energy is stored within
the atom.

28-JAN-2008
Hi all -
Quick question:
At what point do we begin referring to velocities as relativistic?

I declined today the opportunity to buy, with my new washing machine,
one of these gadgets that are claimed to soften water by the action of a
magnetic field.
Do they really work?

The special theory of relativity assumes that the Lorentz
transformation applies equally well to two different cases:
(a) A change in the velocity, momentum and kinetic energy of a test
body within just one inertial laboratory reference frame, very often

Atomic electrons spr
The currently accepted atomic model (nucleus + electron cloud) assumes
that every electron that can be ejected from a ground state atom or
atomic ion in any low energy collision with an atom, ion or particle

In recent years, we are more convinced that both special and general
relativity need deep reconsideration.
The discussion of flaws and limitations of special and general
theories of relativity is not now limited to obscure journals [#] but

On Jan 6, 8:51 pm, TheGh...@haunted.hill (Martha's Ghost) wrote:

Hi, I have the following problem.
To me it appears there is a contradiction between the book
'Supersymmetry for mathematicians' by Varadarajan and the book Spin
Geometry by Lawson & Michelsohn. Varadarajan claims (page 193

I recall hearing of a very interesting theorem ages ago. I believe it
was in Ergodic theory. I believe that the theorem proved that every
chaotic system exhibits predicable behavior. Does that theorem have a
name?

Is there any evidence that any particle has non-zero volume according
to loop quantum gravity?
I know that volume and area are discretely quantized when the matter
is not present, but wonder if the sizes of particles are also non-zero

It is well known that Dirac's belt trick models the behaviour of
spin 1/2 particles. For example, if one turns the end of the
belt (the particle)  by 4 pi, the belt can be untwisted even while
keeping the particle fixed. This illustrates that for spin 1/2

I was looking through the Feynman lectures on physics, and he briefly
mentioned that the invariance with respect to overall phase of
wavefunctions is related to the conservation of charge. Is this true,
and if so, can someone explain the reasoning behind it?

Hey World,
I'm a undergrad physics major and think my latest paper linked below is the
best thing since sliced bread.
http://www.sendspace.com/pro/6a1u9b