[info] [ExI] Many Worlds (was: A Simulation Argument)

[Eugen Leitl]

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From: scerir <scerir at libero.it>
Date: Wed, 9 Jan 2008 20:28:08 +0100
To: ExI chat list <extropy-chat at lists.extropy.org>
Subject: Re: [ExI] Many Worlds (was: A Simulation Argument)
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Damien:
> If you fire a single photon and register its arrival at a detector
> one meter away, you know precisely how long it should take to arrive
> *if it goes straight there*. But on the Feynman account (if I've
> understood it), many components of the supposition meander way the
> hell over the path, and hence should take longer to arrive.

There is a reason why you cannot find on the
web (or I guess so) say the two-slit interference
mathematically explained in path integral terms. 
The formalism is difficult.

If you read:
  Path integrals and quantum interference
  A. O. Barut and S. Basri
  Amer. Jour. Physics, Vol. 60, n 10, pp. 896-899, (1992)
you understand both that your intuition
is right!, and how the formalism solves
the problem.

> If each of them is "realized" in a different universe, rather than
> their phases canceling, then in most universes a photon should
> arrive at an apparent v < c. No? (Well, obviously no, but why not?)

Is that a mixture of MWI and path integral formalism?
They are different representations.




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Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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