46 citations · 127 across the 10 of their papers we have counts for
10 papers
High-Precision Variational Quantum SVD via Classical Orthogonality Correction
Shohei Miyakoshi, Takanori Sugimoto, Tomonori Shirakawa +2
Evaluating the entanglement spectrum is essential for characterizing exotic quantum phases such as quantum criticality and topological order. However, for large quantum many-body s…
Quantum-Inspired Algorithm for Classical Spin Hamiltonians Based on Matrix Product Operators
Ryo Watanabe, Joseph Tindall, Shohei Miyakoshi +1
We propose a tensor-network (TN) approach for solving classical optimization problems that is inspired by spectral filtering and sampling on quantum states. We first shift and scal…
Diamond-shaped quantum circuit for real-time quantum dynamics in one dimension
S. Miyakoshi, T. Sugimoto, T. Shirakawa +2
In recent years, quantum computing has evolved as an exciting frontier, with the development of numerous algorithms dedicated to constructing quantum circuits that adeptly represen…
Photoinduced pairing in the Kondo lattice model
Tomonori Shirakawa, Shohei Miyakoshi, Seiji Yunoki
The previous theoretical study has shown that pulse irradiation to the Mott insulating state in the Hubbard model can induce the enhancement of superconducting correlation due to t…
Spin texture and spin current in excitonic phases of the two-band Hubbard model
Hisao Nishida, Shohei Miyakoshi, Tatsuya Kaneko +2
Using the mean-field approximation, we study the -space spin textures and local spin currents emerged in the spin-triplet excitonic insulator states of the two-band Hubbard mode…
Correlation-Driven Dimerization and Topological Gap Opening in Isotropically Strained Graphene
Sandro Sorella, Kazuhiro Seki, Oleg O. Brovko +4
The phase diagram of isotropically expanded graphene cannot be correctly predicted by ignoring either electron correlations, or mobile carbons, or the effect of applied stress, as…
Excitonic Insulator State of the Extended Falicov-Kimball Model in the Cluster Dynamical Impurity Approximation
Kosuke Hamada, Tatsuya Kaneko, Shohei Miyakoshi +1
We comparatively study the excitonic insulator state in the extended Falicov-Kimball model (EFKM, a spinless two-band model) on the two-dimensional square lattice using the variati…
Entanglement properties of the Haldane phases: A finite system-size approach
Shohei Miyakoshi, Satoshi Nishimoto, Yukinori Ohta
We study the bond-alternating Heisenberg model using the finite-size density-matrix renormalization group (DMRG) technique and analytical arguments based on the matrix product stat…
Mott Transitions and Staggered Orders in the Three-component Fermionic System: Variational Cluster Approach
Takumi Hasunuma, Tatsuya Kaneko, Shohei Miyakoshi +1
The variational cluster approximation is used to study the ground-state properties and single-particle spectra of the three-component fermionic Hubbard model defined on the two-dim…
Antiferromagnetic topological insulator state in the correlated Bernevig-Hughes-Zhang model
S. Miyakoshi, Y. Ohta
We study the effects of electron correlations on the topological phase transition in the Bernevig-Hughes-Zhang model using the variational cluster approach where the short-range sp…