Towards a theory of wavefunction collapse Part 1: How the Diosi-Penrose criterion and Born's rule can be derived from semiclassical gravity, and how the criterion can be relativistically generalised with help of the Einstein-Hilbert action

Abstract

A new approach to wavefunction collapse is prepared by an analysis of semiclassical gravity. The fact that, in semiclassical gravity, superposed states must share a common classical spacetime geometry, even if they prefer (according to general relativity) differently curved spacetimes, leads to energy increases of the states, when their mass distributions are different. If one interprets these energy increases divided by Planck's constant as decay rates of the states, one obtains the lifetimes of superpositions according to the Diosi-Penrose criterion and reduction probabilities according to Born's rule. The derivation of Born's rule for two-state superpositions can be adapted to the typical quantum mechanical experiments with the help of a common property of these experiments. It is that they lead to never more than two different mass distributions at one location referring e.g. to the cases that a particle "is", or "is not", detected at the location. From the characteristic energy of the Diosi-Penrose criterion, an action is constructed whose relativistic generalisation becomes obvious by a decomposition of the Einstein-Hilbert action to the superposed states. In Part 2, semiclassical gravity is enhanced to the so-called Dynamical Spacetime approach to wavefunction collapse, which leads to a physical mechanism for collapse.

arXiv commentUpdate on proofreading

References in corpus (12)

• Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
• Towards quantum superpositions of a mirror
• Quantum Theory of Probability and Decisions
• A Scheme to Probe the Decoherence of a Macroscopic Object
• Quantum Superposition of Massive Objects and Collapse Models
• The Schrödinger-Newton equation and its foundations
• Space-like Separation in a Bell Test assuming Gravitationally Induced Collapses
• Schrödinger-Newton "collapse" of the wave function
• Testing Gravity-Driven Collapse of the Wavefunction via Cosmogenic Neutrinos
• Stochastic modification of the Schrodinger-Newton equation
• Is Gravity Quantum?
• Probing wave function collapse models with a classically driven mechanical oscillator

Cited by in corpus (1)

• Experimental proposal for the Dynamical Spacetime approach to wavefunction collapse