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   sci.physics.research      Current physics research. (Moderated)      17,520 messages   

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   Message 16,153 of 17,520   
   Phillip Helbig (undress to reply to stargene   
   Re: What effects on unitarity if BH Page   
   27 May 18 12:58:46   
   
   From: helbig@asclothestro.multivax.de   
      
   In article <58432b06-a8cf-4ead-9c54-b8e966140f67@googlegroups.com>,   
   stargene  writes:   
      
   > I ask an "in principle" thought experiment question:   
   >   
   > I imagine, in the same spirit as some earlier theories (eg: Hoyle,   
   > Narlikar...) but without specifying any mechanism, that the mass of the   
   > universe is not constant, but increases over cosmic time.  We allow this   
   > to happen at such a rate that, even with its ongoing accelerating   
   > expansion, even the thinnest spaces will always have enough mass density   
   > that all black holes will always increase their mass, by simple   
   > accretion.  Ie: No BH could ever reach its Page time (where it would   
   > have lost half its mass by Hawking radiation (HR).)   
   >   
   > Since this would seem to guarantee that all HR to be entangled with all   
   > of the remaining information-states still in the BH interior, I   
   > innocently ask:   
   >   
   > Would this scenario resolve the classic information loss paradox in BH   
   > physics and save unitarity?   
      
   Probably not.  We can easily imagine a universe (and probably live in   
   one) in which this is not the case.  So while such a mechanism might   
   solve the problem in practice in such an alternate universe, it wouldn't   
   solve it in principle.  The principle is the important point.  Even if   
   the information is not destroyed, no-one could reconstruct what fell   
   into the black hole. That's not the point, the point is the principle.   
   Also, in such a universe, one could perhaps create a space where the   
   black hole WOULD sufficiently radiate (even to the point of exploding).   
      
   One can think of many such solutions: for example, suppose that there is   
   a minimum mass for black holes, and the universe collapses before they   
   reach their Page time.  It would "solve" the problem in that universe,   
   but not in any fundamental sense.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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