383 citations · 3.8k across the 86 of their papers we have counts for
89 papers
Connected Geometries in Gravitational Path Integrals, and Normalized No-Boundary Probabilities
Jean-Luc Lehners
We argue that some of the puzzling features associated with the normalization of gravitational wave functions can be substantially alleviated by restricting the path integral to a…
Quantum States Prepared by Wormholes: Long-Wavelength Deviations from Bunch-Davies
George Lavrelashvili, Jean-Luc Lehners
Wineglass wormholes mediate the nucleation of baby universes out of an asymptotically Anti-de Sitter or flat spacetime. Upon materialization, the new universe naturally undergoes a…
Birth of Inflationary Universes via Wineglass Wormholes and their No-Boundary Relatives
George Lavrelashvili, Jean-Luc Lehners
We study Euclidean wineglass wormholes, which mediate the nucleation of inflationary spacetimes from an existing spacetime with asymptotically flat or Anti-de Sitter regions. These…
Nucleating an Inflationary Universe: Euclidean Wormholes and their No-Boundary Limit
George Lavrelashvili, Jean-Luc Lehners
No-boundary instantons and Euclidean "wineglass" wormholes have both been proposed as providing suitable initial conditions for the current expanding phase of our universe, and in…
Delicate curvature bounces in the no-boundary wave function and in the late universe
Jean-Luc Lehners, Jerome Quintin
Theoretical considerations motivate us to consider vacuum energy to be able to decay and to assume that the spatial geometry of the universe is closed. Combining both aspects leads…
NUTs, Bolts and Stokes Phenomena in the No-Boundary Wave Function
Jean-Luc Lehners
In this note, we revisit and extend the analysis of the no-boundary wave function for the minisuperspace model in which the universe is described by a biaxial Bianchi IX metric. As…