Comments on the no boundary wavefunction and slow roll inflation

2024/03/15 by Maldacena, Juan · 9 citations
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2403.10510

Abstract

We review aspects of the Hartle-Hawking no boundary geometry in the context of slow roll inflation. We give an analytic approximation to the geometry and we explain the rationale for the proposal. We also explain why it gives a prediction for the curvature of the universe that is in disagreement with observations and give a quick review of proposed ways to resolve that disagreement.

Cited by

• Quantum Liouville Cosmology
• Quantum Walks and Exact RG in de Sitter Space
• A new regularization scheme for the wave function of the Universe in the Lorentzian path integral
• Complex Saddles of Charged-AdS Gravitational partition function
• Junctions, strings, clocks and gravitational memory in three dimensional dS space
• Bounding field excursions along null geodesics with applications to cosmology
• Complex Kerr-AdS Black Holes
• A Brief Note on Complex AdS-Schwarzschild Black Holes
• On quantum creation of a toroidal universe

Related

• No-boundary extremal surfaces in slow-roll inflation and other cosmologies
• Volume Weighting in the No Boundary Proposal
• Clarifying Slow Roll Inflation and the Quantum Corrections to the Observable Power Spectra
• Generalized Slow-roll Inflation in Non-minimally Coupled Theories
• Slow Roll Inflation: A Somehow Different Perspective