Higher-order topological phases in a spring-mass model on a breathing kagome lattice
We propose a realization of higher-order topological phases in a spring-mass model with a
breathing kagome structure. To demonstrate the existence of the higher-order topological …
breathing kagome structure. To demonstrate the existence of the higher-order topological …
Topological edge states in the one-dimensional superlattice Bose-Hubbard model
We analyze interacting ultracold bosonic atoms in a one-dimensional superlattice potential
with alternating tunneling rates t 1 and t 2 and inversion symmetry, which is the bosonic …
with alternating tunneling rates t 1 and t 2 and inversion symmetry, which is the bosonic …
Berry phase for higher-order symmetry-protected topological phases
We propose the ZQ Berry phase as a topological invariant for higher-order symmetry-
protected topological (HOSPT) phases for two-and three-dimensional systems. It is …
protected topological (HOSPT) phases for two-and three-dimensional systems. It is …
Symmetry-protected quantization of complex Berry phases in non-Hermitian many-body systems
We investigate the quantization of the complex-valued Berry phases in non-Hermitian
quantum systems with certain generalized symmetries. In Hermitian quantum systems, the …
quantum systems with certain generalized symmetries. In Hermitian quantum systems, the …
Robust analytic continuation combining the advantages of the sparse modeling approach and the Padé approximation
Analytic continuation (AC) from the imaginary-time Green's function to the spectral function is
a crucial process for numerical studies of the dynamical properties of quantum many-body …
a crucial process for numerical studies of the dynamical properties of quantum many-body …
Kernel method for corrections to scaling
K Harada - Physical Review E, 2015 - APS
Scaling analysis, in which one infers scaling exponents and a scaling function in a scaling
law from given data, is a powerful tool for determining universal properties of critical …
law from given data, is a powerful tool for determining universal properties of critical …
Sequential quantum phase transitions in Heisenberg chains with integer spins : Quantized Berry phase and valence-bond solids
On the basis of a Berry-phase analysis, we study the ground state of the J 1-J 2 Heisenberg
chain for S= 2, 3, 4. We find that changes in the Berry phase occur S times for spin-S …
chain for S= 2, 3, 4. We find that changes in the Berry phase occur S times for spin-S …
Fractionally quantized berry's phase in an anisotropic magnet on the kagome lattice
T Kawarabayashi, K Ishii, Y Hatsugai - Journal of the Physical …, 2019 - journals.jps.jp
A fractionally quantized Berry phase is examined numerically in an anisotropic spin-1/2 XXZ
model on the Kagome lattice. It is shown that the Berry phase has a fractionally quantized …
model on the Kagome lattice. It is shown that the Berry phase has a fractionally quantized …
Quantized Berry Phase in the Spin-1/2 XXZ Model on the Anisotropic Kagome Lattice
K Aoyagi, K Ishii, Y Hatsugai… - Journal of the Physical …, 2024 - journals.jps.jp
Using large-scale quantum Monte Carlo simulations, the Z 3 Berry phase in the S= 1/2 XXZ
model on the anisotropic kagome lattice is calculated. It is shown that the Z 3 Berry phase is …
model on the anisotropic kagome lattice is calculated. It is shown that the Z 3 Berry phase is …
Berry phase and symmetry-protected topological phases of the SU() antiferromagnetic Heisenberg chain
The local ZN quantized Berry phase for the SU (N) antiferromagnetic Heisenberg spin model
is formulated. This quantity, which is a generalization of the local Z 2 Berry phase for SU (2) …
is formulated. This quantity, which is a generalization of the local Z 2 Berry phase for SU (2) …