### Max Tegmark's quantum library: collapse.

Please click here to download the paper described
below. Click here if you are interested in other
research of mine.

## APPARENT WAVE FUNCTION COLLAPSE CAUSED BY SCATTERING

### Author:

Max Tegmark

### Abstract:

Some experimental implications of the recent progress on wave function
collapse are calculated. Exact results are derived for the center-of-mass
wave function collapse caused by random scatterings and applied to a range
of specific examples. The results show that recently proposed experiments
to measure the GRW effect are likely to fail, since the effect of naturally
occurring scatterings is of the same form as the GRW effect but generally
much stronger. The same goes for attempts to measure the collapse caused
by quantum gravity as suggested by Hawking and others. The results also
indicate that macroscopic systems tend to be found in states with *(Delta
x) (Delta p) = hbar/sqrt(2)*, but microscopic systems in highly tiltedly
squeezed states with *(Delta x) (Delta p) >> hbar*.

### Reference info:

Published in *Found. Phys. Lett.*, **6**, 571-590 (1993).

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This page was last modified July 1, 1998.
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