九州大学 量子宇宙物理理論研究室 (宇宙物理理論研究室)
Theoretical Quantum Physics, Gravitation and Cosmology, Kyushu University
(Theoretical Astrophysics Group, Kyushu University)
論文
Tomoya Hirotani, Akira Matsumura, Yasusada Nambu, Kazuhiro Yamamoto,
“Large violation of Leggett-Garg inequalities with coherent-state projectors for a harmonic oscillator and chiral scalar field”
Yuuki Sugiyama, Akira Matsumura, Kazuhiro Yamamoto
“Quantumness of gravitational field: A perspective on monogamy relation”
Daisuke Miki, Akira Matsumura, Kazuhiro Yamamoto,
“Negativity volume of the generalized Wigner function in gravitating hybrid system”
Sugumi Kanno, Jiro Soda, Akira Taniguchi,
“Search for high-frequency gravitational waves with Rydberg atoms”
Masaki Tani, Kosei Hatakeyama, Daisuke Miki, Yuuki Yamasaki, Kazuhiro Yamamoto
“Violation of the two-time Leggett-Garg inequalities for a coarse-grained quantum field”
Kosei Hatakeyama, Daisuke Miki, Masaki Tani, Yuuki Yamasaki, Satoshi Iso, Apriadi Salim Adam, Ar Rohim, Kazuhiro Yamamoto
“Violation of the two-time Leggett-Garg inequalities for a harmonic oscillator”
Tomohiro Fujita, Youka Kaku, Akira Matumura, Yuta Michimura
“Inverted Oscillators for Testing Gravity-induced Quantum Entanglement”
Fumiya Nishimura, Yui Kuramochi, Kazuhiro Yamamoto
“Standard quantum limit of finite-size optical lattice clock in estimating gravitational potential”
Yuuki Sugiyama, Akira Matsumura, Kazuhiro Yamamoto
“Quantum uncertainty of gravitational field and entanglement in superposed massive particles”
Youka Kaku, Tomohiro Fujita, Akira Matsumura,
"Enhancement of quantum gravity signal in an optomechanical experiment"
Shinichiro Yamano, Takaya Matsuura, Yui Kuramochi, Toshihiko Sasaki, Masato Koashi
"General treatment of Gaussian trusted noise in continuous variable quantum key distribution"
Sugumi Kanno, Jiro Soda, Akira Taniguchi,
"Circularly polarized gravitational waves in Chern-Simons gravity originated from an axion domain wall"
Tomoya Shichijo, Nobuyuki Matsumoto, Akira Matsumura, Daisuke Miki, Yuuki Sugiyama, Kazuhiro Yamamoto,
"Quantum state of a suspended mirror coupled to cavity light - Wiener filter analysis of the pendulum and rotational modes-"
Sugumi Kanno, Ann Nakato, Jiro Soda, Kazushige Ueda,
"A peak in the power spectrum of primordial gravitational waves induced by primordial magnetic fields"
Takaya Matsuura, Shinichiro Yamano, Yui Kuramochi, Toshihiko Sasaki, Masato Koashi,
"Refined finite-size analysis of binary-modulation continuous-variable quantum key distribution"
Akira Matsumura
"Reduced dynamics with Poincaré symmetry in open quantum system"
Yuuki Sugiyama, Tomoya Shichijo, Nobuyuki Matsumoto, Akira Matsumura, Daisuke Miki, Kazuhiro Yamamoto, Naoki Yamamoto
"Effective description of a suspended mirror coupled to cavity light -Limitations of Q-enhancement due to normal mode splitting by an optical spring-"
Sugumi Kanno, Jiro Soda, Kazushige Ueda
"Impact of quantum entanglement induced by magnetic fields on primordial gravitational waves"
Daisuke Miki, Nobuyuki Matsumoto, Akira Matsumura, Tomoya Shichijo, Yuuki Sugiyama, Kazuhiro Yamamoto, Naoki Yamamoto
"Generating quantum entanglement between macroscopic objects with continuous measurement and feedback control"
Sugumi Kanno, Ann Nakato, Jiro Soda, Kazushige Ueda
"Anisotropic warm inflation"
Issei Koga, Naritaka Oshita, Kazushige Ueda
"dS4 universe emergent from Kerr-AdS5 spacetime: bubble nucleation catalyzed by a black hole"
Yui Kuramochi, Hiroyasu Tajima
"Wigner-Araki-Yanase theorem for continuous and unbounded conserved observables"
Shinichiro Yamano, Takaya Matsuura, Yui Kuramochi, Toshihiko Sasaki, Masato Koashi
"Finite-size security proof of binary-modulation continuous-variable quantum key distribution using only heterodyne measurement"
Ar Rohim, Apriadi Salim Adam, Kazuhiro Yamamoto
"Massive fermion between two parallel chiral plates"
Sugumi Kanno, Jiro Soda, Kazushige Ueda
"Conversion of squeezed gravitons into photons during inflation"
Hiroyasu Tajima, Ryuji Takagi, Yui Kuramochi,
"Universal trade-off structure between symmetry, irreversibility, and quantum coherence in quantum processes"
Yuuki Sugiyama, Akira Matsumura, Kazuhiro Yamamoto
"Consistency between causality and complementarity guaranteed by Robertson inequality in quantum field theory"
Yuuki Sugiyama, Akira Matsumura, Kazuhiro Yamamoto
“Effects of photon field on entanglement generation in charged particles”
Masahiro Hotta, Yasusada Nambu, Yuuki Sugiyama, Kazuhiro Yamamoto, Go Yusa
"Expanding Edges of Quantum Hall Systems in a Cosmology Language"
Issei Koga, Naritaka Oshita, Kazushige Ueda
"Global study of the scalar quasi-normal modes of Kerr-AdS5 black holes: Stability, thermality, and horizon area quantization"
Sugumi Kanno, Jiro Soda
"Squeezed quantum states of graviton and axion in the universe"
Koki Yamashita, Yue Nan, Yuuki Sugiyama, Kazuhiro Yamamoto
"Large-scale structure with superhorizon isocurvature dark energy"
Akira Matsumura
"Path-entangling evolution and quantum gravitational interaction"
Yue Nan, Kazuhiro Yamamoto
"Dark energy model with very large-scale inhomogeneity"
Yui Kuramochi
"Infinite dimensionality of the post-processing order of measurements on a general state space"
Akira Matsumura, Yasusada Nambu, Kazuhiro Yamamoto
"Leggett-Garg inequalities for testing quantumness of gravity"
Daisuke Miki, Akira Matsumura, Kazuhiro Yamamoto
"Non-Gaussian entanglement in gravitating masses: the role of cumulants"
Ar Rohim, Kazuhiro Yamamoto
"Effects of chiral MIT boundary conditions for Dirac particle in a box"
Sugumi Kanno, Akira Matsumura, Jiro Soda
"Harvesting quantum coherence from axion dark matter"
Kazushige Ueda, Atsushi Higuchi, Kazuhiro Yamamoto, Ar Rohim, Yue Nan
"Entanglement of the Vacuum between Left, Right, Future, and Past: Dirac spinor in Rindler spaces and Kasner spaces"
Sugumi Kanno, Jiro Soda, Junsei Tokuda
"Indirect detection of gravitons through quantum entanglement"
Haruka Sakemi, Rikuto Omae, Takumi Ohmura, Mami Machida
"Energy estimation of high energy particles associated with the SS433/W50 system through radio observation at 1.4 GHz"
Akira Matsumura
Field-induced entanglement in spatially superposed objects
Hiroki Matsui
Lorentzian path integral for quantum tunneling and WKB approximation for wave-function
Takumi Ohmura, Kojiro Ono, Haruka Sakemi, Yuta Tashima, Rikuto Omae, Mami Machida
"Continuous Jets and Backflow Models for the Formation of W50/SS433 in Magnetohydrodynamics Simulations"
Yuuki Sugiyama, Kazuhiro Yamamoto, Tsutomu Kobayashi
"Gravitational waves in Kasner spacetimes and Rindler wedges in Regge-Wheeler gauge: Unruh effect"
Akira Matsumura, Kazuhiro Yamamoto
"Gravity-induced entanglement in optomechanical systems"
Daisuke Miki, Akira Matsumura, Kazuhiro Yamamoto
"Entanglement and decoherence of massive particles due to gravity"
Ar Rohim, Kazushige Ueda, Kazuhiro Yamamoto, Shih-Yuin Lin
"Relativistic quantum bouncing particles in a uniform gravitational field"
Akira Dohi, Ryotaro Kase, Rampei Kimura, Kazuhiro Yamamoto, Masa-aki Hashimoto
"Neutron star cooling in modified gravity theories"
arXiv: 2003.00795 [astro-ph.HE]
T. Ohmura, M. Machida, K. E. Nakamura, Y. Kudoh, R. Matsumoto
"Two-temperature Magnetohydrodynamic simulations for sub-relativistic AGN jets:
Dependence on the fraction of the electron heating"
arXiv: 2003.00795 [astro-ph.HE]
Shoji Kato, Mami Machida
"A Possible Origin of kHZ QPOs in Low-Mass X-ray Binaries"
arXiv: 2002.10630 [astro-ph.HE]
Akira Dohi, Masa-aki Hashimoto, Rio Yamada, Yasuhide Matsuo, Masayuki Fujimoto
"An approach to constrain models of accreting neutron stars with the use of an equation of state"
arXiv: 2002.08367 [astro-ph.SR]
Marijke Haverkorn, Mami Machida, Takuya Akahori
"Workshop summary 'The Power of Faraday Tomography'"
arXiv: 1910.08120 [astro-ph.GA]
Akira Dohi, Ken'ichiro Nakazato, Masa-aki Hashimoto, Yasuhide Matsuo, Tsuneo Noda
"Possibility of rapid neutron star cooling with the realistic equation of state"
arXiv: 1910.01431 [astro-ph.HE]
Jen-Tsung Hsiang, B. L. Hu, Shih-Yuin Lin, Kazuhiro Yamamoto
"Fluctuation-Dissipation and Correlation-Propagation Relations in (1+3)D Moving Detector-Quantum Field Systems"
Yue Nan, Kazuhiro Yamamoto, Hajime Aoki, Satoshi Iso, Daisuke Yamauchi
"Large-scale inhomogeneity of dark energy produced in the ancestor vacuum"
arXiv: 1901.11181 [astro-ph.CO]