66 citations · 170 across the 6 of their papers we have counts for
6 papers
Damped perturbations in the no-boundary state
Juan Diaz Dorronsoro, Jonathan J. Halliwell, James B. Hartle +3
We evaluate the no-boundary path integral exactly in a Bianchi IX minisuperspace with two scale factors. In this model the no-boundary proposal can be implemented by requiring one…
Squashed Holography with Scalar Condensates
Gabriele Conti, Thomas Hertog, Yannick Vreys
We evaluate the partition function of the free and interacting O(N) vector model on a two-parameter family of squashed three spheres in the presence of a scalar deformation. We als…
Comments on Squashed-sphere Partition Functions
Nikolay Bobev, Pablo Bueno, Yannick Vreys
We study the partition function of odd-dimensional conformal field theories placed on spheres with a squashed metric. We establish that the round sphere provides a local extremum f…
Quantum Transitions Through Cosmological Singularities
Sebastian F. Bramberger, Thomas Hertog, Jean-Luc Lehners +1
In a quantum theory of cosmology spacetime behaves classically only in limited patches of the configuration space on which the wave function of the universe is defined. Quantum tra…
The NUTs and Bolts of Squashed Holography
Nikolay Bobev, Thomas Hertog, Yannick Vreys
We evaluate the partition function of the free O(N) model on a two-parameter family of squashed three spheres. We also find new solutions of general relativity with negative cosmol…
Lorentzian Condition in Holographic Cosmology
Thomas Hertog, Ruben Monten, Yannick Vreys
We derive a sufficient set of conditions on the Euclidean boundary theory in dS/CFT for it to predict classical, Lorentzian bulk evolution at large spatial volumes. Our derivation…