Improved bounds on collapse models from rotational noise of LISA Pathfinder
arXiv:2501.08971 · doi:10.1103/PhysRevA.111.L020203
Abstract
Spontaneous wavefunction collapse models offer a solution to the quantum measurement problem, by modifying the Schrödinger equation with nonlinear and stochastic terms. The Continuous Spontaneous Localisation (CSL) model is the most studied among these models, with phenomenological parameters that are constrained by experiments. Here, we exploit the recent analysis of LISA Pathfinder's angular motion data to derive a tighter constraint than previously achieved with translational motion. Moreover, we identify the general conditions for preferring rotational measurement over translational ones for constraining the CSL model.
References in corpus (20)
- Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
- Dynamical Reduction Models
- Lower and Upper Bounds on CSL Parameters from Latent Image Formation and IGM Heating
- Experimental bounds on collapse models from gravitational wave detectors
- Upper bounds on spontaneous wave-function collapse models using millikelvin-cooled nanocantilevers
- Present status and future challenges of non-interferometric tests of collapse models
- Optomechanical sensing of spontaneous wave-function collapse
- Improved noninterferometric test of collapse models using ultracold cantilevers
- Non-interferometric Test of Collapse Models in Optomechanical Systems
- Narrowing the parameter space of collapse models with ultracold layered force sensors
- Increased Brownian force noise from molecular impacts in a constrained volume
- Testing spontaneous wave-function collapse models on classical mechanical oscillators
- LISA pathfinder appreciably constrains collapse models
- Gas damping force noise on a macroscopic test body in an infinite gas reservoir
- Colored and Dissipative Continuous Spontaneous Localization model and Bounds from Matter-Wave Interferometry
- Non-interferometric test of the Continuous Spontaneous Localization model based on rotational optomechanics
- In-depth analysis of LISA Pathfinder performance results: Time evolution, noise projection, physical models, and implications for LISA
- Multilayer test masses to enhance the collapse noise
- Collapse dynamics are diffusive
- Non-interferometric rotational test of the Continuous Spontaneous Localisation model: enhancement of the collapse noise through shape optimisation