On 28/09/2017 6:37 am, Brent Meeker wrote:
I've only read the abstract, but it appears that they are assuming
spacial overlap causes collapse, which would go along with some thing
gravity based. But in fact measurements also collapse to eigenstates
of energy or momentum.
Overlap of energy or momentum eigenstates would also lead to overlapping
spacetime geometries -- something gravity based.
Bruce
Brent
On 9/27/2017 2:49 AM, Bruno Marchal wrote:
Hi,
Here is the first account of some theoretical prediction in physics,
which if verified, would refute Computationalism (and Everett QM).
Tilloy proposes a rather clean way to test a version of
Ghirardi-Rimini-Weber collapse-of-the-wave theory, which would
undermine the evidential support for comp and for Everett.
https://arxiv.org/pdf/1709.03809.pdf
"Ghirardi-Rimini-Weber model with massive flashes
Antoine Tilloy
∗
Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748
Garching, Germany
(September 13, 2017)
Abstract
We introduce a modification of the Ghirardi-Rimini-Weber (GRW) model
in which the
flashes (or collapse space-time events) source a classical
gravitational field. The resulting
semi-classical theory of Newtonian gravity preserves the statistical
interpretation of quantum
states of matter in contrast with mean field approaches. It can be
seen as a discrete version
of recent proposals of consistent hybrid quantum classical theories.
The model seems to be
in agreement with known experimental data and introduces new
falsifiable predictions: (1)
particles do not attract themselves, (2) the 1/r gravitational
potential of Newtonian gravity
is cut-off at short (. 10^−7 m) distances, and (3) gravity makes
spatial superpositions decohere
at a rate inversely proportional to that coming from the vanilla GRW
model. Together, the
last two predictions make the model experimentally falsifiable for all
values of its parameters."
Bruno
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