$\Psi$-Epistemic Quantum Cosmology?

Abstract

This paper provides a prospectus for a new way of thinking about the wavefunction of the universe: a $\Psi$-epistemic quantum cosmology. We present a proposal that, if successfully implemented, would resolve the cosmological measurement problem and simultaneously allow us to think sensibly about probability and evolution in quantum cosmology. Our analysis draws upon recent work on the problem of time in quantum gravity, upon causally-symmetric local hidden variable theories, and upon a dynamical origin for the cosmological arrow of time. Our conclusion weighs the strengths and weaknesses of the approach and points towards paths for future development.

33 pre-print pages

References in corpus (18)

• Einstein gravity as a 3D conformally invariant theory
• The causal set approach to quantum gravity
• Conditional probabilities with Dirac observables and the problem of time in quantum gravity
• Are the spectra of geometrical operators in Loop Quantum Gravity really discrete?
• Constraints and gauge transformations: Dirac's theorem is not always valid
• Between classical and quantum
• Through the Big Bang
• Measurement and Collapse within the Two-State-Vector Formalism
• Quantum States as Ordinary Information
• Time-symmetric boundary conditions and quantum foundations
• Records Theory
• Comment on "Are the spectra of geometrical operators in Loop Quantum Gravity really discrete?" by B. Dittrich and T. Thiemann
• Action Duality: A Constructive Principle for Quantum Foundations
• Shape Dynamics. An Introduction
• A Live Alternative to Quantum Spooks
• Lagrangian-Only Quantum Theory
• Analogue spacetimes: Toy models for "quantum gravity''
• Back to Parmenides

Cited by in corpus (2)

• Dynamical Similarity
• Big Bang Singularity Resolution In Quantum Cosmology