- #1

ephen wilb

- 52

- 1

__conservation of energy__, the mathematics requires that any collapse be incomplete? What is the meaning of complete collapse vs incomplete (and the "tails")?

http://en.wikipedia.org/wiki/Objective_collapse_theory

GRW collapse theories have unique problems. In order to keep these theories from violating the principle of theconservation of energy, the mathematics requires that any collapse be incomplete.Almostall of the wave function is contained at the one measurable (and measured) value, but there are one or more small "tails" where the function should intuitively equal zero but mathematically does not. It is not clear how to interpret these "tails". They might mean that a small bit of matter has collapsed elsewhere than the measurement indicates, that with very low probability an object might "jump" from one collapsed state to another, or something else entirely. All of these options seem counterintuitive.

The original QMSL models had the drawback that they did not allow dealing with systems with several identical particles, as they did not respect the symmetries or antisymmetries involved. This problem was addessed by a revision of the original GRW proposal known as CSL (continuous spontaneous localization) developed by Ghirardi, Pearle Rimini in 1990.