29 citations · 56 across the 3 of their papers we have counts for
17 papers
Black hole evaporation in de Sitter space
Ruth Gregory, Ian G. Moss, Naritaka Oshita +1
We investigate the evaporation process of a Kerr-de Sitter black hole with the Unruh-Hawking-like vacuum state, which is a realistic vacuum state modelling the evaporation process…
Lifshitz scaling, ringing black holes, and superradiance
Naritaka Oshita, Niayesh Afshordi, Shinji Mukohyama
We investigate the ringdown waveform and reflectivity of a Lifshitz scalar field around a fixed Schwarzschild black hole. The radial wave equation is modified due to the Lorentz br…
Hawking-Moss transition with a black hole seed
Ruth Gregory, Ian G Moss, Naritaka Oshita +1
We extend the the concept of Hawking-Moss, or up-tunnelling, transitions in the early universe to include black hole seeds. The black hole greatly enhances the decay amplitude, how…
On catalyzed vacuum decay around a radiating black hole and the crisis of the electroweak vacuum
Takumi Hayashi, Kohei Kamada, Naritaka Oshita +1
False vacuum decay is a key feature in quantum field theories and exhibits a distinct signature in the early Universe cosmology. It has recently been suggested that the false vacuu…
Quantum Black Hole Seismology II: Applications to Astrophysical Black Holes
Naritaka Oshita, Daichi Tsuna, Niayesh Afshordi
With the advent of gravitational wave astronomy, searching for gravitational wave echoes from black holes (BHs) is becoming an interesting probe of their quantum nature near their…
Black Holes, Oscillating Instantons, and the Hawking-Moss transition
Ruth Gregory, Ian G. Moss, Naritaka Oshita
Static oscillating bounces in Schwarzschild de Sitter spacetime are investigated. The oscillating bounce with many oscillations gives a super-thick bubble wall, for which the total…