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Higgs scalar potential coupled to gravity in the exponential parametrization in arbitrary gauge
Nobuyoshi Ohta, Masatoshi Yamada
We study the parametrization and gauge dependences in the Higgs field coupled to gravity in the context of asymptotic safety. We use the exponential parametrization to derive the f…
BRST Quantization of General Relativity in Unimodular Gauge and Unimodular Gravity
Taichiro Kugo, Ryuichi Nakayama, Nobuyoshi Ohta
Unimodular gravity (UG) is an important theory which may explain the smallness of the cosmological constant. To get insight into the covariant quantization of UG, we discuss the BR…
Quantum improved charged black holes
Akihiro Ishibashi, Nobuyoshi Ohta, Daiki Yamaguchi
We consider quantum effects of gravitational and electromagnetic fields in spherically symmetric black hole spacetimes in the asymptotic safety scenario. Introducing both the runni…