Publications

Preprints

1. Complex nonlinear sigma model
Kazuki Yamamoto and Kohei Kawabata
arXiv:2601.20166
1. Generalized Nagaoka ferromagnetism accompanied by flavor-selective Mott states in an SU(N) Fermi-Hubbard model
Jutaro Fujii, Kazuki Yamamoto, and Akihisa Koga
arXiv:2512.01264
1. Kondo breakdown induced by the non-Hermitian complex hybridization
Kazuki Yamamoto, Masaya Nakagawa, and Norio Kawakami
arXiv:2510.20186
1. Measurement-Induced Crossover of Quantum Jump Statistics in Postselection-Free Many-Body Dynamics
Kazuki Yamamoto and Ryusuke Hamazaki
arXiv:2503.02418

1. Dimensionality effect on exceptional fermionic superfluidity with spin-dependent asymmetric hopping
Soma Takemori, Kazuki Yamamoto, and Akihisa Koga
J. Low Temp. Phys. 222, 37 (2026). (arXiv:2509.17414)
Open Access
1. Elliptical-rod geometries enhance photonic band gaps in disordered stealthy hyperuniform photonic crystals
Kota Asakura, Kazuki Yamamoto, and Akihisa Koga
J. Phys. Soc. Jpn. 95, 024711 (2026) (arXiv:2510.20374)

1. Spin-Depairing-Induced Exceptional Fermionic Superfluidity
Soma Takemori, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. Lett. 135, 266002 (2025) (arXiv:2504.19525)
Press Release
1. Itinerant ferromagnetism in an SU(3) Fermi-Hubbard model at finite temperatures: A dynamical mean-field theory study
Juntaro Fujii, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. B 112, 115136 (2025) (arXiv:2505.12704)
1. Measurement-induced phase transitions for free fermions in a quasiperiodic potential
Toranosuke Matsubara, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. B 112, 054309 (2025) (arXiv:2503.23807)
1. Correlation versus dissipation in a non-Hermitian Anderson impurity model
Kazuki Yamamoto, Masaya Nakagawa, and Norio Kawakami
Phys. Rev. B 111, 125157 (2025) (arXiv:2408.03494)

1. Phase diagram of non-Hermitian BCS superfluids in a dissipative asymmetric Hubbard model
Soma Takemori, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. B 110, 184518 (2024) (arXiv:2406.16482)
1. Theory of non-Hermitian fermionic superfluidity on a honeycomb lattice: Interplay between exceptional m anifolds and Van Hove singularity
Soma Takemori, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. B 109, L060501 (2024) (arXiv:2309.16191)

1. Interaction-induced Liouvillian skin effect in a fermionic chain with a two-body loss
Shu Hamanaka, Kazuki Yamamoto, and Tsuneya Yoshida
Phys. Rev. B 108, 155114 (2023) (arXiv:2305.19697)
1. Localization properties in disordered quantum many-body dynamics under continuous measurement
Kazuki Yamamoto and Ryusuke Hamazaki
Phys. Rev. B 107, L220201 (2023) (arXiv:2301.0729)
1. Universal description of dissipative Tomonaga-Luttinger liquids with SU( $N$ ) spin symmetry: Exact spectrum and critical exponents
Kazuki Yamamoto and Norio Kawakami
Phys. Rev. B 107, 045110 (2023) (arXiv:2207.04395)

1. Universal properties of dissipative Tomonaga-Luttinger liquids: Case study of a non-Hermitian XXZ spin chain
Kazuki Yamamoto, Masaya Nakagawa, Masaki Tezuka, Masahito Ueda, and Norio Kawakami
Phys. Rev. B 105, 205125 (2022) (arXiv:2112.12467)
Youtube

1. Collective Excitations and Nonequilibrium Excitations in Dissipative Fermionic Superfluids
Kazuki Yamamoto, Masaya Nakagawa, Naoto Tsuji, Masahito Ueda, and Norio Kawakami
Phys. Rev. Lett. 127, 055301 (2021) (arXiv:2006.06169)
Open Access

1. Rectification in nonequilibrium steady states of open many-body systems
Kazuki Yamamoto, Yuto Ashida, and Norio Kawakami
Phys. Rev. Research 2, 043343 (2020) (arXiv:2009.00838)
Open Access

1. Theory of Non-Hermitian Fermionic Superfluidity with a Complex-Valued Interaction
Kazuki Yamamoto, Masaya Nakagawa, Kyosuke Adachi, Kazuaki Takasan, Masahito Ueda, and Norio Kawakami
Phys. Rev. Lett. 123, 123601 (2019) (arXiv:1903.0472)
Open Access, Highly Cited Paper in Web of Science (2021-2025)

1. Point-gap topology of non-Hermitian many-body systems
Shu Hamanaka, Kazuki Yamamoto, and Tsuneya Yoshida
New Phys.: Sae Mulli 73, 1178 (2023)