114 citations · 980 across the 45 of their papers we have counts for
46 papers
Analog de Sitter universe in quantum Hall systems with an expanding edge
Yasusada Nambu, Masahiro Hotta
Expanding edges in quantum Hall systems can become a simulator of quantum 1+1 dimensional expanding universes. In these systems, edge exciations are represented as a chiral scalar…
Limitations of Quantum Measurements and Operations of Scattering Type under the Energy Conservation Law
Ryota Katsube, Masanao Ozawa, Masahiro Hotta
It is important to improve the accuracy of quantum measurements and operations both in engineering and fundamental physics. It is known, however, that the achievable accuracy of me…
Deep Learning Metric Detectors in General Relativity
Ryota Katsube, Wai-Hong Tam, Masahiro Hotta +1
We consider conceptual issues of deep learning (DL) for metric detectors using test particle geodesics in curved spacetimes. Advantages of DL metric detectors are emphasized from a…
Expanding Edges of Quantum Hall Systems in a Cosmology Language -- Hawking Radiation from de Sitter Horizon in Edge Modes
Masahiro Hotta, Yasusada Nambu, Yuuki Sugiyama +2
Expanding edge experiments are promising to open new physics windows of quantum Hall systems. In a static edge, the edge excitation, which is described by free fields decoupled wit…
Comment on "When the Quantum Energy Teleportation is Observable? "
Masahiro Hotta
Recently authors of a paper (arXiv:2105.04407) claim that quantum energy teleportation is unobservable due to a time-energy uncertainty relation. In this short note, I will point o…
A Lie algebra based approach to asymptotic symmetries in general relativity
Takeshi Tomitsuka, Koji Yamaguchi, Masahiro Hotta
Asymptotic symmetries of black hole spacetimes have received much attention as a possible origin of the Bekenstein-Hawking entropy in black hole thermodynamics. In general, it take…