RE: Many Worlds invalidated?

From: Brent Meeker <>
Date: Mon, 26 Apr 2004 12:32:05 -0000

I don't find any reference to Afshar or his experiment on the
Harvard web site or on

Brent Meeker

>-----Original Message-----
>From: Jeff Bone []
>Sent: Monday, April 26, 2004 6:27 PM
>Subject: Many Worlds invalidated?
>Hot off the press, via Boingsters:
> Many Worlds theory invalidated
>Kathryn Cramer breaks the story on a to-be-presented
>Harvard talk on an
>experiment that appears to invalidate both the "Many Worlds" and
>"Copenhagen" theories of quantum mechanics. Kathryn is
>the daughter of
>John Cramer, a physicist whose "Transactional Interpretetation"
>hypothesis is the only one left intact by the
>experiment's findings.
>It has been widely accepted that the rival
>interpretations of quantum
>mechanics, e.g., the Copenhagen Interpretation, the Many-Worlds
>Interpretation, and my father John Cramer's Transactional
>Interpretation, cannot be distinguished or falsified by
>because the experimental predictions come from the
>formalism that all
>such interpretations describe. However, the Afshar Experiment
>demonstrates in an interaction-free way that there is a
>loophole in
>this logic: if the interpretation is inconsistent with
>the formalism,
>then it can be falsified. In particular, the Afshar Experiment
>falsifies the Copenhagen Interpretation, which requires
>the absence of
>interference in a particle-type measurement. It also
>falsifies the
>Many-Worlds Interpretation which tells us to expect no
>between "worlds" that are physically distinguishable, e.g., that
>correspond to the photon's passage through one pinhole
>or the other.
>Link (Thanks, Kathryn!)
Received on Mon Apr 26 2004 - 16:31:33 PDT

This archive was generated by hypermail 2.3.0 : Fri Feb 16 2018 - 13:20:09 PST