Re: Interesting time travel paper

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2 total messages Started by Jon J Thaler Thu, 16 Apr 1992 22:05

#1251

Author: Jon J Thaler
Date: Thu, 16 Apr 1992 22:05

22 lines
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srctran@world.std.com (Gregory Aharonian) says:

> March 28, 1992 issue of New Scientist, page 23, has an interesting
> article reviewing an article in Physical Review D (October 1991) in which
> David Deutsch of Oxford uses the many-worlds hypothesis to show how one can
> how time travel without the paradoxes of killing your grandfather.  He
> argues that if you could travel back in time, you would end in a parallel
> universe, whose future you could affect, without affecting your own future.
> Interesting articles.

You might look at this article, by Igor Novikov (now at the Copenhagen
University Observatory):

THE JINN OF THE TIME MACHINE: NONTRIVIAL SELFCONSISTENT SOLUTIONS.
By A. Lossev, I.D. Novikov (Nordita & Moscow, ITEP & Lebedev Inst.), 1991.
NORDITA Copenhagen - NORDITA-91-41 (91,rec.Oct.) 20 p. (submitted to
Class. Quantum Grav.).

I haven't read it, but I heard him give a talk with that title.  He argues
that the lack of 'grandfather paradoxes' might just be a boundary condition
that is automatically satisfied.  I don't recall that he discussed any
specific mechanisms which might enforce this.

Re: Interesting time travel paper

#1260

Author: Warren G. Anderson
Date: Fri, 17 Apr 1992 14:13

36 lines
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In article <92107.140505DOCTORJ@SLACVM.SLAC.STANFORD.EDU>  
DOCTORJ@SLACVM.SLAC.STANFORD.EDU (Jon J Thaler) writes:
> srctran@world.std.com (Gregory Aharonian) says:
> 
> > March 28, 1992 issue of New Scientist, page 23, has an interesting
> > article reviewing an article in Physical Review D (October 1991) in which
> > David Deutsch of Oxford uses the many-worlds hypothesis to show how one can
> > how time travel without the paradoxes of killing your grandfather.  He
> > argues that if you could travel back in time, you would end in a parallel
> > universe, whose future you could affect, without affecting your own future.
> > Interesting articles.
> 
> You might look at this article, by Igor Novikov (now at the Copenhagen
> University Observatory):
> 
> THE JINN OF THE TIME MACHINE: NONTRIVIAL SELFCONSISTENT SOLUTIONS.
> By A. Lossev, I.D. Novikov (Nordita & Moscow, ITEP & Lebedev Inst.), 1991.
> NORDITA Copenhagen - NORDITA-91-41 (91,rec.Oct.) 20 p. (submitted to
> Class. Quantum Grav.).
> 
> I haven't read it, but I heard him give a talk with that title.  He argues
> that the lack of 'grandfather paradoxes' might just be a boundary condition
> that is automatically satisfied.  I don't recall that he discussed any
> specific mechanisms which might enforce this.

As a further added note, I know that Mike Morris (one of the people who's area
of specialty is Thorne wormholes) has also been looking at selfconsistent 
solution, although I don't know if he's published much about it. Kip Thorne is
also interested in such things, so you might want to do a literature search on  
him in the last 5 years or so too.

--
########################## _`|'_ ##############################################
##  Warren G. Anderson     |o o| "... for its truth does not matter, and is  ##
##  Dept. of Physics       ( ^ )  unimaginable." -J. Ashbery, The New Spirit ##
##  University of Alberta  /\-/\      (anderson@fermi.phys.ualberta.ca)      ##

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