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Hybrid Higgs Inflation: The Use of Disformal Transformation
Seiga Sato, Kei-ichi Maeda
We propose a hybrid type of the conventional Higgs inflation and new Higgs inflation models. We perform a disformal transformation into the Einstein frame and analyze the backgroun…
Massive Graviton Geons
Katsuki Aoki, Kei-ichi Maeda, Yosuke Misonoh +1
We find vacuum solutions such that massive gravitons are confined in a local spacetime region by their gravitational energy in asymptotically flat spacetimes in the context of the…
Non-linear collisional Penrose process: How large energy can a black hole release?
Ken-ichi Nakao, Hirotada Okawa, Kei-ichi Maeda
Energy extraction from a rotating or charged black hole is one of fascinating issues in general relativity. The collisional Penrose process is one of such extraction mechanisms and…