Talk:Feynman parametrization

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Contents 1 breeze? 2 Factorials and GAMMA-functions 3 Examples needed 4 Spelling! 5 Schwinger: original contribution to Feynman parameterization

[edit] breeze?

what exactly is this making a breeze? --MarSch 12:24, 18 December 2006 (UTC)

[edit] Factorials and GAMMA-functions

Since the results are not limited to integer powers, would it not be better to alter the last two multiple integrals to have Γ-function pre-multipliers? (This would also imply what is generally true, that the method works for powers alpha_n whose real parts are positive.)

Note, incidentally, that this method is useful in areas well outside quantum electodynamics! (I have used them many times in other areas.) Hair Commodore 20:17, 8 August 2007 (UTC)

I have now made this change. It looks better, but the resultant formula might still be improved. Hair Commodore 19:27, 2 September 2007 (UTC)

[edit] Examples needed

This subject would be better described if an example or two were supplied. I will attempt to do so - soon(ish). Hair Commodore 17:16, 10 August 2007 (UTC)

[edit] Spelling!

Should not this page, and its brother at Schwinger parametrization have the spelling parameterization? (That's the way in which I - and many others have spelt it for many years ...) Hair Commodore 19:24, 20 August 2007 (UTC)

[edit] Schwinger: original contribution to Feynman parameterization

According to Sylvan Schweber's extensive (and classic) book, QED and the men who made it: Dyson, Feynman, Schwinger and Tomonaga (Princeton, 1994), the classical (simple: 1/(AB)) formula for Feynman parameterization (sic!) as recorded in the main article was given to Richard Feynman by Julian Schwinger. The latter left it to Feynman to develop and use. Hair Commodore 19:22, 28 August 2007 (UTC)