46 citations · 138 across the 13 of their papers we have counts for
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Impact of quantum entanglement induced by magnetic fields on primordial gravitational waves
Sugumi Kanno, Ann Mukuno, Jiro Soda +1
There exist observational evidence to believe the existence of primordial magnetic fields generated during inflation. We study primordial gravitational waves (PGWs) during inflatio…
Anisotropic warm inflation
Sugumi Kanno, Ann Mukuno, Jiro Soda +1
Anisotropic inflation is a model succeeded in explaining statistical anisotropy. Warm inflation is a model succeeded in providing a mechanism of reheating during inflation. We stud…
dS universe emergent from Kerr-AdS spacetime: bubble nucleation catalyzed by a black hole
Issei Koga, Naritaka Oshita, Kazushige Ueda
The emergence of a four-dimensional de Sitter (dS) universe on an expanding bubble in the five-dimensional anti-de Sitter (AdS) background has been suggested as a possi…
Conversion of squeezed gravitons into photons during inflation
Sugumi Kanno, Jiro Soda, Kazushige Ueda
It is believed that relic gravitons are squeezed during inflation. If so, quantum noise induced by them can be significantly enhanced in current interferometers. However, decoheren…
Global study of the scalar quasi-normal modes of Kerr-AdS black holes: Stability, thermality, and horizon area quantization
Issei Koga, Naritaka Oshita, Kazushige Ueda
We numerically explore the structure of quasi-normal (QN) frequencies of the five-dimensional small and large Kerr-anti de Sitter (Kerr-AdS) black hole with equal and unequal…