4 papers
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…
-term Multi-Field Inflation in Supergravity without Stabiliser Superfields
Jinn-Ouk Gong, Sergei V. Ketov, Takahiro Terada
Realising -term slow-roll inflation in supergravity is non-trivial due to the well-known -problem. The common strategy to solve the problem is to impose a shift symmetry on…
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…
Induced Gravitational Waves probing Primordial Black Hole Dark Matter with Memory Burden
Kazunori Kohri, Takahiro Terada, Tsutomu T. Yanagida
Quantum evaporation of a black hole is conventionally studied semiclassically by assuming self-similarity of the black hole throughout the evaporation process. However, its validit…