66 citations · 191 across the 6 of their papers we have counts for
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No-boundary prescriptions in Lorentzian quantum cosmology
Alice Di Tucci, Jean-Luc Lehners, Laura Sberna
We analyse the impact of various boundary conditions on the (minisuperspace) Lorentzian gravitational path integral. In particular we assess the implications for the Hartle-Hawking…
Homogeneous Transitions during Inflation: a Description in Quantum Cosmology
Sebastian F. Bramberger, Alice Di Tucci, Jean-Luc Lehners
The usual description of inflationary fluctuations uses the framework of quantum field theory (QFT) in curved spacetime, in which quantum fluctuations are superimposed on a classic…
Quantum Incompleteness of Inflation
Alice Di Tucci, Job Feldbrugge, Jean-Luc Lehners +1
Inflation is most often described using quantum field theory (QFT) on a fixed, curved spacetime background. Such a description is valid only if the spatial volume of the region con…
The No-Boundary Proposal as a Path Integral with Robin Boundary Conditions
Alice Di Tucci, Jean-Luc Lehners
Realising the no-boundary proposal of Hartle and Hawking as a consistent gravitational path integral has been a long-standing puzzle. In particular, it was demonstrated by Feldbrug…