title: Are collapse models testable with quantum oscillating systems? The case of neutrinos, kaons, chiral molecules.
abstract: Collapse models provide a theoretical framework for understanding how classical world emerges from quantum mechanics. Their dynamics preserves (practically) quantum linearity for microscopic systems, while it becomes strongly nonlinear when moving towards macroscopic scale. The conventional approach to test collapse models is to create spatial superpositions of mesoscopic systems and then examine the loss of interference, while environmental noises are engineered carefully. Here we investigate a different approach: We study systems that naturally oscillate-creating quantum superpositions-and thus represent a natural case-study for testing quantum linearity: neutrinos, neutral mesons, and chiral molecules. We will show how spontaneous collapses affect their oscillatory behavior, and will compare them with environmental decoherence effects. We will show that, contrary to what previously predicted, collapse models cannot be tested with neutrinos. The effect is stronger for neutral mesons, but still beyond experimental reach. Instead, chiral molecules can offer promising candidates for testing collapse models.
authors.affiliation: 1] Department of Chemistry, K. N. Toosi University of Technology, 1587-4416 Tehran, Iran (on leave) [2] Department of Physics, University of Trieste, Strada Costiera 11, 34014 Trieste, Italy [3] The Abdus Salam ICTP, Strada Costiera 11, 34151 Trieste, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Bahrami
authors.forename: S
authors.initials: S
authors.lastname: Donadi
authors.forename: L
authors.initials: L
authors.lastname: Ferialdi
authors.forename: A
authors.initials: A
authors.lastname: Bassi
authors.forename: C
authors.initials: C
authors.lastname: Curceanu
authors.forename: A
authors.initials: A
authors.lastname: Di Domenico
authors.forename: B C
authors.initials: BC
authors.lastname: Hiesmayr