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Re: strong and weak forces

Look for a modern text on the Weak Interactions or Field Theory, e.g.,
Weinberg. It is not light reading, because there is no point in writing
these things down if you don't know how to calculate with them. The
problem is that the "coordinates" in these theories are the wave functions
of the particles that are described, which are themselves functions of the
spacetime coordinates.

The classical equivalent is not the mechanics of point particles but the
mechanics (if I can call it that) of fields. The easiest analogy is
non-linear acoustics, where the pressure field is described by a
non-linear (in the pressure) wave equation. If the non-linear term has no
derivatives in it, then it might be referred to be a "potential". The
usage is correct, because if one writes a Hamiltonian for the pressure,
the non-linear term term will be obtained from a corresponding non-linear
term in the Hamiltonian just as a force is obtained from a potential.

Note that the question is not about understanding physical phenomena. It
is about terminology used in difficult calculations.
Regards,
Jack

On Fri, 1 Feb 2002, Joe Heafner wrote:

From: "John S. Denker" <jsd@MONMOUTH.COM>

Joe Heafner wrote:

Do approximate analytical expressions for the strong and weak nuclear forces exist?

Yes. (Assuming you're not being nit-picky about the definition
of "analytical".)

So where are the expressions? I can't seem to find them.




Cheers,
Joe

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