Modal Approaches in Metaphysics and Quantum Mechanics

Some interpretations of quantum mechanics use notions of possible states and possible trajectories. I investigate how this modal approach correlates with several metaphysical conceptions of a transition from potential to actual existence. The comparison is based on a discussion in contemporary analytical metaphysics of modality. I also consider an analogy between Leibniz’s theory of the possibilities striving towards existence, wave mechanics of Schrodinger, and Feynman path integral.