Posts by hatsugai

2021.8.19 / Published (coming soon)

Non real energies for Hermitian problems

Eigenvalues may not be always real for generalized eigenvalue problems even if the Hamiltonian and overlap mat […]
2021.8.17 / Published (coming soon)

Multiple quantum scars and dynamics

A flat band system with interaction that possesses a single “quantum scar”, which we have proposed […]
2021.8.4 / Published (coming soon)

One more topological phase with chiral edge states

Bulk-edge correspondence is universal. We do find a novel playground of the chiral edge states protected by bu […]
2021.7.31 / Published (coming soon)

Flat bands of COF/MOF in any dimension

Covalent/Metal-organic framework (COF/MOF) is a 2D/3D network compound of organic molecules (linkages) connect […]
2021.7.31

Flat bands and spin-1 Dirac cone
2021.7.22

Reduction of non-hermitian topology in 0-D
2021.7.22

Non-real energies in real world
2021.6.29

Plateau transitions of quantum spin chain
2021.6.15

Symmetries and square-root operations
2021.5.25

Square-root topological semimetals