[FoRK] Many Worlds invalidated?

Paul Sholtz paulsholtz2004 at hotmail.com
Mon Apr 26 12:41:21 PDT 2004

What about David Bohm's interpretation of QM? My understanding is that 
Bohmian mechanics assumes a single, non-splitting unverise (unlike the 
Everett many-worlds interpretation), and that it is also deterministic 
(unlike the Copenhagen interpretation).

Last time I checked, Bohm still hadn't been formally invalidated, but.. that 
was quite a few years ago! ;-)

Bohmian Mechanics
Bohmian mechanics, which is also called the de Broglie-Bohm theory, the 
pilot-wave model, and the causal interpretation of quantum mechanics, is a 
version of quantum theory discovered by Louis de Broglie in 1927 and 
rediscovered by David Bohm in 1952. It is the simplest example of what is 
often called a hidden variables interpretation of quantum mechanics. In 
Bohmian mechanics a system of particles is described in part by its wave 
function, evolving, as usual, according to Schrödinger's equation. However, 
the wave function provides only a partial description of the system. This 
description is completed by the specification of the actual positions of the 
particles. The latter evolve according to the "guiding equation," which 
expresses the velocities of the particles in terms of the wave function. 
Thus, in Bohmian mechanics the configuration of a system of particles 
evolves via a deterministic motion choreographed by the wave function. In 
particular, when a particle is sent into a two-slit apparatus, the slit 
through which it passes and where it arrives on the photographic plate are 
completely determined by its initial position and wave function.


>From: Contempt for Meatheads <jbone at place.org>
>To: FoRK <fork at xent.com>
>Subject: [FoRK] Many Worlds invalidated?
>Date: Mon, 26 Apr 2004 13:22:10 -0500
>Hot off the press, via Boingsters:
>	http://www.boingboing.net/2004/04/26/many_worlds_theory_i.html
>  Many Worlds theory invalidated

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