Re: Does the state-vector collapse?

From: scerir (scerir@libero.it)
Date: Wed Sep 20 2000 - 09:32:45 MDT


David Blenkinsop wrote:
> To the extent that Many Worlds explains what superpositions are all
> about, better than more ordinary, Copenhagen style explanations, I
> suppose we have to consider the possibility that *all* possible world
> histories are equally real?

In the original paper (circa 1957) about the "Relative State Interpretation"
(now "Many Worlds Interpretation") H. Everett III does not say that
all possible world histories are *real* or equally *real*.

Gell-Mann, in example, says that every each world history has,
as usual, a probability attached.

Otherwise it is not easy to normalize, that is to compute the entropy
involved in a quantum measurement.

Papers about "Many Worlds or Many Words?".
http://arxiv.org/abs/quant-ph/9709032
http://arxiv.org/abs/gr-qc/9703089
http://arxiv.org/abs/gr-qc/9704039
http://arxiv.org/abs/quant-ph/9904004
http://arxiv.org/abs/quant-ph/9609006
http://arxiv.org/abs/quant-ph/9510007



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