505 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- RIKEN Center for Advanced PhotonicsJP177 papers
- Computing CenterRU106 papers
- The University of TokyoJP97 papers
- RIKENJP79 papers
- RIKEN Center for Emergent Matter ScienceJP57 papers
- University of MichiganUS51 papers
- RIKEN Center for Computational ScienceJP45 papers
- The University of OsakaJP38 papers
- Pioneer (Japan)JP29 papers
- Japan Science and Technology AgencyJP26 papers
- Tokyo University of ScienceJP24 papers
- Kyoto UniversityJP14 papers
27 papers · 1 filter
A sine-square deformation approach to quantum critical points in one-dimensional systems
Yuki Miyazaki, Shiori Tanigawa, Giacomo Marmorini +2
We propose a method to determine the quantum phase boundaries of one-dimensional systems using sine-square deformation (SSD). Based on the proposition, supported by several exactly…
Repulsive-Interaction-Driven Topological Superconductivity in a Landau Level Coupled to an -Wave Superconductor
Koji Kudo, Ryota Nakai, Hiroki Isobe +2
A two-dimensional topologically nontrivial state of noninteracting electrons, such as the surface state of a three-dimensional topological insulator, is predicted to realize a topo…
Low-energy photoexcitations inside the Mott gap in doped Hubbard and t-J ladders
Sumal Chandra, Kazuya Shinjo, Shigetoshi Sota +2
We investigate changes in the optical conductivity of doped Mott insulators by tuning ultrashort pump pulses to target either the Drude or low-energy absorption regions. Using a ho…
Exact description of fermionic reservoirs via purified damped ancillary fermions
Pengfei Liang, Neill Lambert, Mauro Cirio
We present a method for the modeling of fermionic reservoirs using a new class of ancillary damped fermions, dubbed purified pseudofermions, which exhibit unusual free correlations…
Dissipationless dynamics of spin supersolid states in a spin-1/2 triangular antiferromagnet with impurities
Yixuan Huang, Yuan Gao, Wei Li +2
Motivated by recent experimental evidence for spin supersolid states in triangular-lattice compounds, we numerically investigate the dynamical properties of magnetic field-induced…
Floquet theory and applications in open quantum and classical systems
Masahiro Sato, Tatsuhiko N. Ikeda
This article reviews theoretical methods for analyzing Floquet engineering (FE) phenomena in open (dissipative) quantum or classical systems, with an emphasis on our recent results…
Probabilistic imaginary-time evolution in state-vector-based and shot-based simulations and on quantum devices
Satoshi Ejima, Kazuhiro Seki, Benedikt Fauseweh +1
Imaginary-time evolution, an important technique in tensor network and quantum Monte Carlo algorithms on classical computers, has recently been adapted to quantum computing. In thi…
Optical absorption activated by an ultrashort half-cycle pulse in metallic and superconducting states of the Hubbard model
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
The development of high-intensity ultrashort laser pulses unlocks the potential of pump-probe spectroscopy in sub-femtosecond timescale. Notably, subcycle pump pulses can generate…
Lee-Yang formalism for phase transitions of interacting fermions using tensor networks
Pascal M. Vecsei, Jose L. Lado, Christian Flindt
Predicting the phase diagram of interacting quantum many-body systems is a challenging problem in condensed matter physics. Strong interactions and correlation effects may lead to…
Quantum anomalous, spin, and valley Hall effects in pentalayer rhombohedral graphene moiré superlattices
Koji Kudo, Ryota Nakai, Kentaro Nomura
Recent experiments on pentalayer rhombohedral graphene moiré superlattices have observed the quantum anomalous Hall effect at moiré filling factor of and various fractional…
Spin and charge dynamics of doped one-dimensional Mott insulators
Takami Tohyama, Hiroki Maeda, Kenji Tsutsui +2
Recent angle-resolved photoemission spectroscopy (ARPES) for a newly discovered doped one-dimensional (1D) Mott insulator BaSrCuO proposed the presence of attra…
Inverse Hamiltonian design of highly-entangled quantum systems
Koji Inui, Yukitoshi Motome
Solving inverse problems to identify Hamiltonians with desired properties holds promise for the discovery of fundamental principles. In quantum systems, quantum entanglement plays…
Kekulé valence bond order in the Hubbard model on the honeycomb lattice with possible lattice distortions for graphene
Yuichi Otsuka, Seiji Yunoki
We investigate if and how the valence-bond-solid (VBS) state emerges in the Hubbard model on the honeycomb lattice when the Peierls-type electron-lattice coupling is introduced. We…
Spin loop-current textures in Hubbard models
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
The recent experimental observations of loop current in SrIrO, YBaCuO, and SrCuO have inspired a theoretical study that broadly r…
Anomalous suppression of photo-induced in-gap weight in the optical conductivity of a two-leg Hubbard ladder
Takami Tohyama, Kazuya Shinjo, Shigetoshi Sota +1
Photoinduced nonequilibrium states in the Mott insulators reflect the fundamental nature of competition between itinerancy and localization of the charge degrees of freedom. The sp…
Pair density wave characterized by a hidden string order parameter
Hao-Kai Zhang, Rong-Yang Sun, Zheng-Yu Weng
A composite pairing structure of superconducting state is revealed by density matrix renormalization group study in a two-leg - model. The pairing order parameter is composed…
Controlling inversion and time-reversal symmetries by subcycle pulses in the one-dimensional extended Hubbard model
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
Owning to their high controllability, laser pulses have contributed greatly to our understanding of strongly correlated electron systems. However, typical multicycle pulses do not…
Continuous transition from a Landau quasiparticle to a neutral spinon
Jing-Yu Zhao, Shuai A. Chen, Rong-Yang Sun +1
We examine a wavefunction ansatz in which a doped hole can experience a quantum transition from a charge Landau quasiparticle to a neutral spinon as a function of the underlyi…
Variational counterdiabatic driving of the Hubbard model for ground-state preparation
Q Xie, Kazuhiro Seki, Seiji Yunoki
Counterdiabatic (CD) protocols enable fast driving of quantum states by invoking an auxiliary adiabatic gauge potential (AGP) that suppresses transitions to excited states througho…
Possible chiral spin liquid state in the kagome Heisenberg model
Rong-Yang Sun, Hui-Ke Jin, Hong-Hao Tu +1
The nature of the ground state for the kagome Heisenberg antiferromagnet (KHAF) has been elusive. We revisit this challenging problem and provide numerical evidence that…
Local multiplet formation around a single vacancy in graphene: an effective Anderson model analysis based on the block-Lanczos DMRG method
Tomonori Shirakawa, Seiji Yunoki
To better understand the electronic structure of a single vacancy in graphene, we study the ground state property of an effective Anderson model, consisting of three dangling $sp^2…
QMC study of the chiral Heisenberg Gross-Neveu universality class
Yuichi Otsuka, Kazuhiro Seki, Sandro Sorella +1
We investigate a quantum criticality of an antiferromagnetic phase transition in the Hubbard model on a square lattice with a -wave pairing field by large-scale auxiliary-field…
Matrix product states for Hartree-Fock-Bogoliubov wave functions
Hui-Ke Jin, Rong-Yang Sun, Yi Zhou +1
We provide an efficient and accurate method for converting Hartree-Fock-Bogoliubov wave functions into matrix product states (MPSs). These wave functions, also known as Bogoliubov…
Magnetic phase diagrams of the spin- Heisenberg model on a kagome-strip chain: Emergence of a Haldane phase
Katsuhiro Morita, Shigetoshi Sota, Takami Tohyama
Frustrated one-dimensional quantum spin systems are known to exhibit a variety of quantum ground states due to the effects of quantum fluctuations and frustrations. In a spin-1/2 k…