Name: Camm Maguire (email_not_shown)
Date: 05/22/04-01:23:34 AM Z


Greetings!

Bob McElrath <bob+maxima@mcelrath.org> writes:

> Camm Maguire [camm@enhanced.com] wrote:
> > Greetings!
> >
> > Bob McElrath <bob+maxima@mcelrath.org> writes:
> > > It also contains code for doing one-loop integrals. This same code
> > > exists in several places (I know of a fortan library "ff" and a Maple
> > > package "xloops" as well), and I can point to the papers if people
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > I think this would be helpful.
>
> Let me say that this *must* be implemented by an expert. The physics
> community barely trusts such codes, and the ones that are barely trusted
> (such as ff) have been massively cross checked across many calculations
> and papers. That said:
> http://dx.doi.org/10.1016/0550-3213(79)90605-9

Is there an nline version of this one available to a general audience?

Take care,

> Here is a more modern reference with some new ideas, and the references
> will be useful:
> http://arxiv.org/abs/hep-ph/0307113
> Bertfried Fauser (on CC list) works on these types of things and might
> be an appropriate person to do it.
>
> These calculations are in general plauged by singularities, and the
> procedure to remove them lies in physics, not math (renormalization).
> The singularities are real, but we understand that they do not affect
> physical observables. If it were possible to write general algorithmic
> codes, we would do it.
>
> Cheers,
> Bob McElrath [Univ. of California at Davis, Department of Physics]
>
> "A great many people think they are thinking when they are merely
> rearranging their prejudices." -- William James
>

-- 
Camm Maguire			     			camm@enhanced.com
==========================================================================
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah



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