119 citations · 155 across the 5 of their papers we have counts for
3 papers · 1 filter
Dimensional (In)dependence of Lorentzian Quantum Cosmology
Masazumi Honda, Hiroki Matsui, Kota Numajiri +2
We study transition amplitudes of the quantum universe in -dimensional spacetime within the de Sitter minisuperspace approximation in Einstein gravity. Using the Lorentzian path…
Casimir-Induced Quintessence in Dark Dimension
Tomoki Katayama, Hiroki Matsui, Yuri Michinobu +3
We investigate a concrete realization of the Dark Dimension scenario, where a single large extra dimension is set at sub-millimeter scales. In this framework, the Casimir energy of…
Resurgence in Lorentzian quantum cosmology: No-boundary saddles and resummation of quantum gravity corrections around tunneling saddle points
Masazumi Honda, Hiroki Matsui, Kazumasa Okabayashi +1
We revisit the path-integral approach to the wave function of the Universe by utilizing Lefschetz thimble analyses and resurgence theory. The traditional Euclidean path-integral of…