Re: which Multiverse?

2010-04-27 Thread Brent Meeker

On 4/27/2010 5:23 AM, ronaldheld wrote:

comments on this paper: http://arxiv.org/PS_cache/arxiv/pdf/1004/1004.0148v1.pdf
  Ronald



Unitary evolution has always implied that there is some basis in which there is no 
decoherence.  Recovery of a classical world must depend on (approximate) einselection of 
special "pointer" states.  So I don't think there is a transformation that gives eqn (2) 
unless the system consists of time-like separate regions for the whole duration considered 
- in which case they are already two physically separate "worlds" that have just been 
represented together mathematically.  I think decoherence depends on the *approximate*, 
but not strict, separability of the interaction.


Brent

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RE: which Multiverse?

2010-04-27 Thread Stephen P. King

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which Multiverse?

2010-04-27 Thread ronaldheld
comments on this paper: http://arxiv.org/PS_cache/arxiv/pdf/1004/1004.0148v1.pdf
 Ronald

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