Spontaneous Collapse Models
arXiv:2508.18822 · doi:10.1016/B978-0-323-95703-8.00104-X
Abstract
Collapse models are phenomenological models introduced to solve the measurement problem in quantum mechanics. They modify the Schrödinger equation by adding non-linear and stochastic terms, which induce the wavefunction collapse in space. The collapse effects are negligible for microscopic systems but become dominant in the macroscopic regime, thus also describing coherently the quantum-to-classical transition. Collapse models make different predictions compared to those of quantum mechanics; hence they can be tested. Here we introduce the most relevant collapse models present in the literature, and describe their main features. We also discuss how one can test them in different experiments, underlying the differences with predictions of quantum mechanics, and show how these experiments can set bounds on the collapse parameters. We conclude with a brief summary of the colored and dissipative generalization of such models and their experimental tests.
References in corpus (21)
- Lower and Upper Bounds on CSL Parameters from Latent Image Formation and IGM Heating
- Underground test of gravity-related wave function collapse
- Experimental bounds on collapse models from gravitational wave detectors
- Present status and future challenges of non-interferometric tests of collapse models
- Room temperature test of the Continuous Spontaneous Localization model using a levitated micro-oscillator
- Collapse models with non-white noises
- Bounds on collapse models from cold-atom experiments
- Narrowing the parameter space of collapse models with ultracold layered force sensors
- Bulk Heating Effects as Tests for Collapse Models
- Heating Through Phonon Excitation Implied by Collapse Models
- LISA pathfinder appreciably constrains collapse models
- An ultra-narrow line width levitated nano-oscillator for testing dissipative wavefunction collapse
- Colored and Dissipative Continuous Spontaneous Localization model and Bounds from Matter-Wave Interferometry
- A cosmic shadow on CSL
- Gravity and the Collapse of the Wave Function: a Probe into Diósi-Penrose model
- Impact of dynamical collapse models on inflationary cosmology
- Novel CSL bounds from the noise-induced radiation emission from atoms
- Testing Continuous Spontaneous Localization with Fermi liquids
- Colored collapse models from the non-interferometric perspective
- Unitary unravelling for the Dissipative Continuous Spontaneous Localization model: application to optomechanical experiments
- On the linear friction many-body equation for dissipative spontaneous wavefunction collapse