Wave function collapse models and interplay between Quantum Theory and Gravity
Quantum mechanics, despite its predictive success, leaves fundamental questions unanswered: how does the classical world emerge from quantum linearity, and what is the precise role of the wave function? A possible answer to this questions are the so-called Spontaneous Collapse Models developed both theoretically—extending them to dissipative, non-Markovian, and relativistic regimes—and experimentally, by testing bounds via interferometric or non-interferometric tests. These models are naturally connected to the interplay between quantum theory and gravity, as the collapse mechanisms may reveal how quantum states source gravitational fields and reconcile non-locality with relativistic causality. By linking collapse dynamics with gravitational phenomena, one aims to illuminate both the quantum-to-classical transition and the foundations of a quantum theory of gravity.
Papers:
Gravity as a classical channel and its dissipative generalization, 2021, Phys. Rev. D 104, 104027
Linear friction many-body equation for dissipative spontaneous wavefunction collapse, 2023, Phys. Rev. D 104, 104027
Experimental bounds on linear-friction dissipative collapse models from levitated optomechanics, 2024, New J. Phys. 26, 043006
Probing the Quantum Nature of Gravity through Classical Diffusion, 2025, arXiv:2501.13030