Models of spontaneous wave function collapse: what they are, and how they can be tested

Emergent Quantum Mechanics 2015

Bassi, Angelo^1,2

Department of Physics, University of Trieste, Miramare-Trieste

34151, Italy^1

Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Via Valerio 2, Trieste

34127, Italy^2

关键词: Dinger equation;    Experimental test;    Macroscopic superpositions;    Microscopic system;    Quantum properties;    Wave function collapse;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/701/1/012012/pdf
DOI  :  10.1088/1742-6596/701/1/012012

来源: IOP

【 摘 要 】

There are few proposals, which explicitly allow for (experimentally testable) deviations from standard quantum theory. Collapse models are among the most-widely studied proposals of this kind. The Schrödinger equation is modified by including nonlinear and stochastic terms, which describe the collapse of the wave function in space. These spontaneous collapses are rare for microscopic systems, hence their quantum properties are left almost unaltered. On the other hand, collapses become more and more frequent, the larger the object, to the point that macroscopic superpositions are rapidly suppressed. The main features of collapse models will be reviewed. An update of the most promising experimental tests will be presented.