106 citations · 142 across the 15 of their papers we have counts for
16 papers
Complete Entanglement Structure of the Kitaev Honeycomb Spin Liquid from Exact Tensor Networks
Hidehiro Saito, Chisa Hotta
While most of the features of the Kitaev honeycomb model are already clarified from the combined plaquette and Majorana fermion picture, we show that retrieving the…
Theory of clusterization in orbitally degenerate transition-metal compounds driven by lattice instabilities
Soshun Ozaki, Kota Mitsumoto, Chisa Hotta
We derive an effective orbital-lattice model with quantum degrees of freedom for transition-metal compounds, providing a microscopic understanding of cluster formation driven…
Specific heat and susceptibility of S=1/2 antiferromagnets on square, triangular, and kagome lattices
Chisa Hotta
We study the temperature dependence of the thermodynamic properties of spin-1/2 antiferromagnets on two-dimensional lattices. Our analysis employs the sine-square deformation (SSD)…
Environment-matrix-product operator for boundary-free large-scale quantum many-body simulations
Souta Shimozono, Chisa Hotta
We propose an alternative to the infinite density-matrix renormalization approach for accessing quantum many-body states within a finite-size calculation that faithfully mimics the…
Scan calculation of the density of states: real space cluster perturbation theory applied to inhomogeneous Hubbard model in one dimension
Kaito Matsuki, Chisa Hotta, Kenichi Asano
We present the spectral analysis of a one-dimensional Hubbard model with a parabolic potential, using a real-space cluster perturbation theory (rCPT) designed to study spatially in…
Dynamical dimerization and subdiffusive transport of strongly correlated neutral-ionic systems coupled to lattices
Yuta Sakai, Chisa Hotta
We study the Monte Carlo dynamics of strongly correlated classical particles coupled to lattice degrees of freedom that exhibit the neutral-ionic transitions in one dimension, rele…
Effective spin model with anisotropic exchange interactions for the spin-orbit coupled Hubbard model at half-filling
Ryo Makuta, Chisa Hotta
Spin-orbit coupling (SOC) in noncentrosymmetric materials is the source of incommensurate magnetic structures. In semiconductors, it drives the Rashba spin splitting and spin momen…
Spinor ice correlation in flat-band electronic states on kagome and pyrochlore lattices with spin-orbit coupling
Hiroki Nakai, Masafumi Udagawa, Chisa Hotta
We investigate the emergence and transformation of pinch-point singularities in the excitation spectrum of electronic flat band systems on kagome and pyrochlore lattices with spin-…
Spin amplitude wave due to dipole-quadrupole hybridization in spin-1 pyrochlore magnets
Hiroki Nakai, Chisa Hotta
We explore the quantum pseudospin-1 pyrochlore magnet featuring Fe-based spinel oxides that addresses the formation of amplitude-modulated spin-density waves. We propose tha…
Diffusive dynamics of fractionalized particles and the enhanced conductivity at the border of the neutral-ionic transition
Yuta Sakai, Chisa Hotta
We study the diffusive dynamics of the classical one-dimensional lattice model of mobile particles featuring the incoherent metallic state of the organic TTF-CA found in the vicini…
Cluster-projected matrix product state: framework for engineering exact quantum many-body ground states in one and two dimensions
Hidehiro Saito, Chisa Hotta
We propose a framework to design concurrently a frustration-free quantum many-body Hamiltonian and its numerically exact ground states on a sufficiently large finite-size cluster i…
Pinch-point spectral singularity from the interference of topological loop states
Masafumi Udagawa, Hiroki Nakai, Chisa Hotta
Pinch point is a spectral discontinuity found in the neutron diffraction image of spin ice. Similar spectral singularity is commonly observed in a broad range of systems that have…
Phase diagram of the quantum spin-1/2 Heisenberg- model on a frustrated zigzag chain
Hidehiro Saito, Chisa Hotta
We investigate the quantum spin-1/2 zigzag chain with frustrated - Heisenberg interactions, incorporating additional off-diagonal exchange interactions known as the t…
Sample complexity of matrix product states at finite temperature
Atsushi Iwaki, Chisa Hotta
For quantum many-body systems in one dimension, computational complexity theory reveals that the evaluation of ground-state energy remains elusive on quantum computers, contrasting…
Exact matrix product states at the quantum Lifshitz tricritical point in a spin-1/2 zigzag-chain antiferromagnet with anisotropic -term
Hidehiro Saito, Chisa Hotta
Quantum anisotropic exchange interactions in magnets can induce competitions between phases in a different manner from those typically driven by geometrically frustrated interactio…
Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions
Tao Hong, Y. H. Kim, C. Hotta +10
We study the magnetic-field-induced quantum phase transition from a gapped quantum phase that has no magnetic long-range order into a gapless phase in the spin-1/2 ladder compound…