Colored collapse models from the non-interferometric perspective

Abstract

Models of spontaneous wave function collapse describe the quantum-to-classical transition by assuming a progressive breakdown of the superposition principle when the mass of the system increases, providing a well-defined phenomenology in terms of a non-linearly and stochastically modified Schrodinger equation, which can be tested experimentally. The most popular of such models is the Continuous Spontaneous Localization (CSL) model: in its original version, the collapse is driven by a white noise, and more recently, generalizations in terms of colored noises, which are more realistic, have been formulated. We will analyze how current non-interferometric tests bound the model, depending on the spectrum of the noise. We will find that low frequency purely mechanical experiments provide the most stable and strongest bounds.

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• Impact of dynamical collapse models on inflationary cosmology
• Testing Continuous Spontaneous Localization with Fermi liquids
• Unitary unravelling for the Dissipative Continuous Spontaneous Localization model: application to optomechanical experiments
• Collapse models: main properties and the state of art of the experimental tests
• Nanomechanical test of quantum linearity
• On the effectiveness of the collapse in the Diósi-Penrose model
• A Quantum Spectrometer for Arbitrary Noise
• Minimum measurement time: lower bound on the frequency cutoff for collapse models
• CSL reduction rate for rigid bodies
• Spontaneous Collapse Models
• Non-interferometric rotational test of the Continuous Spontaneous Localisation model: enhancement of the collapse noise through shape optimisation
• Opto-mechanical tests of collapse models
• The Continuous Spontaneous Localization Layering Effect from a Lattice Perspective
• Testing Continuous Spontaneous Localization model with charged macro-molecules
• New avenues for testing collapse models
• Spontaneous collapse effects on relativistic fermionic matter
• Quantum Physics in Space
• Collapse models and gravitational decoherence at test: How far can we push the limits of quantum mechanics?