Models of wave-function collapse, underlying theories, and experimental tests

A Bassi, K Lochan, S Satin, TP Singh, H Ulbricht - Reviews of Modern Physics, 2013‏ - APS
Quantum mechanics is an extremely successful theory that agrees with every experimental
test. However, the principle of linear superposition, a central tenet of the theory, apparently …

Gravitational decoherence

A Bassi, A Großardt, H Ulbricht - Classical and Quantum Gravity, 2017‏ - iopscience.iop.org
We discuss effects of loss of coherence in low energy quantum systems caused by or related
to gravitation, referred to as gravitational decoherence. These effects, resulting from random …

Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity

J Oppenheim, C Sparaciari, B Šoda… - Nature …, 2023‏ - nature.com
We consider two interacting systems when one is treated classically while the other system
remains quantum. Consistent dynamics of this coupling has been shown to exist, and …

Lower and upper bounds on CSL parameters from latent image formation and IGM heating

SL Adler - Journal of Physics A: Mathematical and Theoretical, 2007‏ - iopscience.iop.org
We study lower and upper bounds on the parameters for stochastic state vector reduction,
focusing on the mass-proportional continuous spontaneous localization (CSL) model. We …

The weak field limit of quantum matter back-reacting on classical spacetime

I Layton, J Oppenheim, A Russo… - Journal of High Energy …, 2023‏ - Springer
A bstract Consistent coupling of quantum and classical degrees of freedom exists so long as
there is both diffusion of the classical degrees of freedom and decoherence of the quantum …

Quantum linear Boltzmann equation

B Vacchini, K Hornberger - Physics Reports, 2009‏ - Elsevier
We review the quantum version of the linear Boltzmann equation, which describes in a non-
perturbative fashion, by means of scattering theory, how the quantum motion of a single test …

Resolving the tension with diffusion

A Perez, D Sudarsky, E Wilson-Ewing - General Relativity and Gravitation, 2021‏ - Springer
The tension between the value of the Hubble constant H_0 H 0 determined from local
supernovae data and the one inferred from the cosmic microwave background based on the …

Collapse models with non-white noises

SL Adler, A Bassi - Journal of Physics A: Mathematical and …, 2007‏ - iopscience.iop.org
We set up a general formalism for models of spontaneous wavefunction collapse with
dynamics represented by a stochastic differential equation driven by general Gaussian …

Collapse dynamics are diffusive

S Donadi, L Ferialdi, A Bassi - Physical Review Letters, 2023‏ - APS
Noninterferometric experiments have been successfully employed to constrain models of
spontaneous wave function collapse, which predict a violation of the quantum superposition …

Exact closed master equation for Gaussian non-Markovian dynamics

L Ferialdi - Physical review letters, 2016‏ - APS
Non-Markovian master equations describe general open quantum systems when no
approximation is made. We provide the exact closed master equation for the class of …