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1“...We unveil the stable (d+1)-dimensional topological structures underlying the quench dynamics for all of the Altland-Zirnbauer classes in d=1 dimension, and we...”
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2by Kawabata, Kohei Higashikawa, Sho Gong, Zongping Ashida, Yuto Ueda, Masahito Published in Nature communications (17.01.2019)“...Topological phases are enriched in non-equilibrium open systems effectively described by non-Hermitian Hamiltonians. While several properties unique to...”
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3by Kawabata, Kohei Shiozaki, Ken Ueda, Masahito Sato, Masatoshi Published in Physical review. X (01.10.2019)“...Phys. Rev. X 9, 041015 (2019) We develop a complete theory of symmetry and topology in non-Hermitian physics. We demonstrate that non-Hermiticity ramifies the...”
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4by Nakagawa, Masaya Kawakami, Norio Ueda, Masahito Published in Physical review letters (16.11.2018)“...We investigate the Kondo effect in an open quantum system, motivated by recent experiments with ultracold alkaline-earth(-like) atoms. Because of inelastic...”
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5“...Synthetic non-conservative systems with parity-time (PT) symmetric gain-loss structures can exhibit unusual spontaneous symmetry breaking that accompanies...”
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6“...The ability to measure single quanta allows the complete characterization of small quantum systems known as full-counting statistics. Quantum gas microscopy...”
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7by Gong, Zongping Ashida, Yuto Kawabata, Kohei Takasan, Kazuaki Higashikawa, Sho Ueda, Masahito Published in Physical review. X (01.09.2018)“...Phys. Rev. X 8, 031079 (2018) Recent experimental advances in controlling dissipation have brought about unprecedented flexibility in engineering non-Hermitian...”
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8by Toyabe, Shoichi Sano, Masaki Ueda, Masahito Muneyuki, Eiro Sagawa, Takahiro Published in Nature physics (01.12.2010)“...In 1929, Leó Szilárd invented a feedback protocol in which a hypothetical intelligence-dubbed Maxwell's demon-pumps heat from an isothermal environment and...”
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10“...The eigenstate thermalization hypothesis (ETH), which dictates that all diagonal matrix elements within a small energy shell be almost equal, is a major...”
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11by Hamazaki, Ryusuke Kawabata, Kohei Ueda, Masahito Published in Physical review letters (01.08.2019)“...Phys. Rev. Lett. 123, 090603 (2019) Many-body localization is shown to suppress imaginary parts of complex eigenenergies for general non-Hermitian Hamiltonians...”
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12“...Unlike well-established parameter estimation, function estimation faces conceptual and mathematical difficulties despite its enormous potential utility. We...”
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13“...The two known mechanisms for superflow are the gradient of the U(1) phase and the spin-orbit-gauge symmetry. We find the third mechanism, namely a spatial...”
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14by Liu, Tao Zhang, Yu-Ran Ai, Qing Gong, Zongping Kawabata, Kohei Ueda, Masahito Nori, Franco Published in Physical review letters (22.02.2019)“...A d-dimensional second-order topological insulator (SOTI) can host topologically protected (d-2)-dimensional gapless boundary modes. Here, we show that a 2D...”
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15“...We show that Bose-Einstein condensates in optical lattices with broken time-reversal symmetry can support chiral edge modes originating from nontrivial bulk...”
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16by Higashikawa, Sho Nakagawa, Masaya Ueda, Masahito Published in Physical review letters (09.08.2019)“...A single Weyl fermion, which is prohibited in static lattice systems by the Nielsen-Ninomiya theorem, is shown to be realized in a periodically driven...”
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17“...Phys. Rev. B 98, 165148 (2018) A non-Hermitian extension of a Chern insulator and its bulk-boundary correspondence are investigated. It is shown that in...”
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18by Nakagawa, Masaya Tsuji, Naoto Kawakami, Norio Ueda, Masahito Published in Physical review letters (10.04.2020)“...In quantum magnetism, the virtual exchange of particles mediates an interaction between spins. Here, we show that an inelastic Hubbard interaction...”
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19“...The last decade has witnessed remarkable progress in our understanding of thermalization in isolated quantum systems. Combining the eigenstate thermalization...”
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20by Yamamoto, Kazuki Nakagawa, Masaya Adachi, Kyosuke Takasan, Kazuaki Ueda, Masahito Kawakami, Norio Published in Physical review letters (01.09.2019)“...Phys. Rev. Lett. 123, 123601 (2019) Motivated by recent experimental advances in ultracold atoms, we analyze a non-Hermitian (NH) BCS Hamiltonian with a...”