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- Xref: sparky sci.physics:21771 alt.sci.physics.new-theories:2611
- Newsgroups: sci.physics,alt.sci.physics.new-theories
- Path: sparky!uunet!well!sarfatti
- From: sarfatti@well.sf.ca.us (Jack Sarfatti)
- Subject: re: forces from virtual spin 2 & spin 1 quanta
- Message-ID: <BzuMJD.9yI@well.sf.ca.us>
- Sender: news@well.sf.ca.us
- Organization: Whole Earth 'Lectronic Link
- Date: Sat, 26 Dec 1992 04:16:25 GMT
- Lines: 37
-
-
- I remember seeing a proof of this by Chris Isham in an ICTP pre-print in
- early 1970's - but I forget how it goes. If Isham at Imperial College U
- London has e-mail some one should ask him. Does anyone have a simple
- picture to explain attractive force between unlike electric charges as
- exchange of virtual spacelike photon? Let's see if Feynman discusses this
- in his classic papers on QED
-
- From: sichase@csa3.lbl.gov (SCOTT I CHASE)
- Subject: Re: Spin-2 ===> Attractive Force ??
- Date: 23 Dec 1992 13:08 PST
- Organization: Lawrence Berkeley Laboratory - Berkeley, CA, USA
- Lines: 25
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- News-Software: VAX/VMS VNEWS 1.41
-
- In article <92350.133819CCB104@psuvm.psu.edu> , CCB104@psuvm.psu.edu
- writes:
- >Why are spin-2 "exchange particles" supposed to imply attractive---rather
- >than EITHER attractive or repulsive, as with electromagnetism---forces? In
- >other words, why can't spin-2 "exchange particles" represent repulsive
- >forces?
-
- I don't have a simple answer for you. But I can tell you that the
- theorem is more general - even-spin exchange bosons are only attractive,
- while odd-spin exchange bosons can mediate attractive forces as well.
- Another example is the residual strong interaction - the spin-0 pion
- mediates an attractive component, but a spin-1 particle (such as the rho)
- is required to get the repulsive hard core.
-
- I'm not sure I've ever seen a simple proof of this theorem. I have to
- dig through some of my old notes to see what I can come up with. However,
- I will need some time, since I still have more than 500 old sci.physics
- postings to wade through.
-
- -Scott
-