> Date: Mon, 9 Feb 2009 13:02:31 +1100
> From: lists.domain.name.hidden
> To: everything-list.domain.name.hidden
> Subject: Re: [KevinTryon.domain.name.hidden: Jacques Mallah]
>
> All I have ever said was that effective probability given by the
> squared norm of the projected eigenvector does not follow from Born's
> rule. It can't follow, because Born's rule says nothing about what the
> normalisation of the state vector after observation should be. It is a
> conditional probability only.
I still don't understand the connection you're making. When people say the effective probability is equal to the amplitude squared, it doesn't require you to assume anything about the state vector *after* observation (in particular you don't have to assume an objective collapse), it's just the square of the norm of the vector you get when you project the system's (normalized) state vector at the instant *before* observation onto an eigenvector.
Jesse
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Received on Sun Feb 08 2009 - 21:34:41 PST