Natural Science Forum / Physics / Particle Physics / July 2008

  Is there a klein gordon equation describing virtual particles?
For example if I take a virtual photon, then will putting  (D^2 -
m^2)\psi describe the virtual photon?
I'm not feeling comfortable with the above since it describes a

OK,...probably a dumb question...
I'm trying to follow the treatment of Dirac's equation with an
electromagnetic field (say, like in Messiah XX.21).  What is not clear
to me and doesn't seem to be explicitly expressed, is the commutation

Why is SU(3) assumed as the exact symmetry for the color quantum
number rather than SO(3)?
I understand SU(3) is an inexact symmetry for "flavor" but is there
some"deep" reason that "color" has to be SU(3)?  Some experimental

"The Lorentz Transformation for Velocity"
    It is recognized that Special Relativity provides the Lorentz
Transformations for Length and Time and Mass between reference frames having
a relative velocity. What is too often not recognized that, in so doing, it

"The Matter of "Dark Matter"
    There have been many postings about the mysterious "Dark Matter" which
is alleged to constitute 90 to 95% of the mass(energy) content of the
Universe. The presence of this "Dark Matter" is indicated by the observed

For over half a century now Theoretical Physics academia has been
desperately searching for the TRUE value of the Fine Structure
Constant. The best "guess" so far from those scientists in Quantum
Mechanics diligently working to find this correct value is:

"How Does Light 'Know' How Fast to Travel?"
    One of the basic beliefs of modern physics is that the velocity of
light is the same wherever and whenever it is measured. It is, in the
language of physics, invariant. To illustrate this understanding, let us

Space volume is expanding equally in every direction. This means that
the original pattern or shape of matter will not change. The galaxies
were the same shape in the beginning as they are now. Space has
expanded in all 3 dimensions equally enlarging the original pattern.