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- Path: sparky!uunet!charon.amdahl.com!pacbell.com!ames!agate!agate!hfg
- From: hfg@physics11.berkeley.edu (H.F. (Rick) Goldstein)
- Newsgroups: sci.physics
- Subject: Re: A least action problem
- Date: 17 Nov 92 17:47:21
- Organization: UC Berkeley Department of Physics
- Lines: 27
- Message-ID: <HFG.92Nov17174721@physics11.berkeley.edu>
- References: <1e9kqpINNfhu@darkstar.UCSC.EDU>
- NNTP-Posting-Host: physics11.berkeley.edu
- In-reply-to: rowell5@cats.ucsc.edu's message of 17 Nov 1992 02:19:05 GMT
-
- In article <1e9kqpINNfhu@darkstar.UCSC.EDU> rowell5@cats.ucsc.edu (Corbett Ray Rowell) writes:
- > Remember the bead traveling between two points and the question is
- > "What is its path?" and it turns out to be a cycloid.
- > My questions are:
- > 1) What if the bead has a velocity near the speed of light?
- > or
- > 2) If the bead were a point charge in an electrical field, a vertical
- > electrical field?
- >
-
- I did a version of this problem as my undergraduate honors project.
- My advisor kindly helped me to publish it. I don't have the precise
- reference with me, but to good first approximation it is:
-
- H. F. Goldstein and C. M. Bender, "Relativistic Brachistochrone,"
- J. Math. Phys., early 1986 (sorry, don't know the month off hand).
-
- Warning: I took the easy way out and neglected radiation. A group
- from India published a follow up article in Phys. Rev. A about a year
- later which did try to deal with radiation, but I'm not sure they did
- it right. You can try to find that paper using the Science Citation
- Index; I don't have a copy, myself.
-
- Hope that helps.
-
- Rick Goldstein
-
-