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From: clt@pur-phy.UUCP (Carrick Talmadge)
Newsgroups: net.physics
Subject: Re: A smoking gun for QED...
Message-ID: <1290@pur-phy.UUCP>
Date: Thu, 12-Apr-84 11:56:13 EST
Article-I.D.: pur-phy.1290
Posted: Thu Apr 12 11:56:13 1984
Date-Received: Sun, 15-Apr-84 06:25:15 EST
References: <957@ihuxm.UUCP>
Organization: Purdue University Physics Dept.
Lines: 21

I think the previous author has his notation slightly confused:

QFT is NOT an extension of QED any more than calculus is an extension
of classical mechanics!  (The analogy is inexact, but so what?) QED is
based upon the techniques used in Quantum Field Theory, just as modern
Solid State Physics uses QFT for rather typical lattice calculations
(as a side note, one is just as likely to come across infinities in 
Solid State Physics as in a theory of elementary particles such as QED).

I believe the author was referring either to the so-called "Standard Model"
(which incorporates the Glashow-Weinberg-Salam theory of electro-weak in-
teractions plus the theory of strong interactions), or possibly one of the
"Grand Unified Theories", which attempt unify electro-weak interactions with
strong interactions.

				Carrick Talmadge

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