159 citations · 1.6k across the 48 of their papers we have counts for
48 papers
Stability and quasi-normal ringing in analogue black-white holes in SNAIL-based traveling-wave parametric amplifiers
Daisuke Yamauchi, Haruna Katayama, Norihiro Tanahashi
The circuit dynamics constructed by traveling-wave parametric amplifiers (TWPA), using superconducting nonlinear asymmetric elements (SNAILs), are known to be approximately describ…
Holographic Description of Bulk Wave Packets in AdS/CFT
Norihiro Tanahashi, Seiji Terashima, Shiki Yoshikawa
In this paper, we extend the study of wave packets from the AdS/CFT correspondence to AdS/CFT and examine properties of their energy density. We find that, while th…
Generalisation of Conformal-Disformal Transformations of the Metric in Scalar-Tensor Theories
Eugeny Babichev, Keisuke Izumi, Karim Noui +2
We study new classes of metric transformations in the context of scalar-tensor theories, which involve both higher derivatives of the scalar field and derivatives of the metric its…
Spin current generation due to differential rotation
Takumi Funato, Shunichiro Kinoshita, Norihiro Tanahashi +2
We study nonequilibrium spin dynamics in differentially rotating systems, deriving an effective Hamiltonian for conduction electrons in the comoving frame. In contrast to conventio…
Krylov complexity and chaos in quantum mechanics
Koji Hashimoto, Keiju Murata, Norihiro Tanahashi +1
Recently, Krylov complexity was proposed as a measure of complexity and chaoticity of quantum systems. We consider the stadium billiard as a typical example of the quantum mechanic…
Hairy black holes in AdS with Robin boundary conditions
Tomohiro Harada, Takaaki Ishii, Takuya Katagiri +1
We study hairy black holes in Einstein-Maxwell-complex scalar theory in four-dimensional asymptotically global anti-de Sitter (AdS) spacetime when the Robin boundary conditions are…