Publications

Preprints

23.
Measurement-induced spatially nonuniform fluctuations of the local particle number and their crossover in a quasiperiodic free-fermion chain
Toranosuke Matsubara and Kazuki Yamamoto
arXiv:2607.03799

Original Papers

2026

22.
Nonequilibrium phase transition of dissipative fermionic superfluids: Case study of multi-terminal Josephson junctions
Soma Takemori and Kazuki Yamamoto
To be published in Phys. Rev. B (arXiv:2604.00574)
21.
Complex nonlinear sigma model
Kazuki Yamamoto and Kohei Kawabata
To be published in Phys. Rev. B (arXiv:2601.20166)
20.
Anomalous waiting-time distributions in postselection-free quantum many-body dynamics under continuous monitoring
Kazuki Yamamoto and Ryusuke Hamazaki
To be published in Quantum Sci. Technol. (arXiv:2604.00358)
19.
Measurement-Induced Crossover of Quantum Jump Statistics in Postselection-Free Many-Body Dynamics
Kazuki Yamamoto and Ryusuke Hamazaki
Phys. Rev. Lett. 137, 040402 (2026) (arXiv:2503.02418)
Open Access, Press Release
18.
Kondo breakdown induced by non-Hermitian complex hybridization
Kazuki Yamamoto, Masaya Nakagawa, and Norio Kawakami
Phys. Rev. B 114, 065118 (2026) (arXiv:2510.20186)
17.
Impact of stealthy hyperuniform magnetic impurity configurations on bulk magnetism in a two-dimensional Heisenberg model
Kota Asakura, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. B 114, 024403 (2026) (arXiv:2602.22484)
16.
Generalized Nagaoka ferromagnetism accompanied by flavor-selective Mott states in an SU( $N$ ) Fermi-Hubbard model
Jutaro Fujii, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. B 113, 115132 (2026) (arXiv:2512.01264)
15.
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
14.
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)

2025

13.
Spin-Depairing-Induced Exceptional Fermionic Superfluidity
Soma Takemori, Kazuki Yamamoto, and Akihisa Koga
Phys. Rev. Lett. 135, 266002 (2025) (arXiv:2504.19525)
Press Release
12.
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)
11.
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)
10.
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)

2024

9.
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)
8.
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)

2023

7.
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)
6.
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)
5.
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)

2022

4.
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

2021

3.
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

2020

2.
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

2019

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)

Conference Proceedings

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

Others

Doctoral dissertation
Master thesis (links can be requested)