Relations between topology and the quantum metric for Chern insulators

T Ozawa, B Mera - Physical Review B, 2021 - APS
We investigate relations between topology and the quantum metric of two-dimensional
Chern insulators. The quantum metric is the Riemannian metric defined on a parameter …

Kähler geometry and Chern insulators: Relations between topology and the quantum metric

B Mera, T Ozawa - Physical Review B, 2021 - APS
We study Chern insulators from the point of view of Kähler geometry, ie, the geometry of
smooth manifolds equipped with a compatible triple consisting of a symplectic form, an …

Engineering geometrically flat Chern bands with Fubini-Study Kähler structure

B Mera, T Ozawa - Physical Review B, 2021 - APS
We describe a systematic method to construct models of Chern insulators whose Berry
curvature and the quantum volume form coincide and are flat over the Brillouin zone; such …

Information geometry of quantum critical submanifolds: Relevant, marginal, and irrelevant operators

B Mera, N Paunković, ST Amin, VR Vieira - Physical Review B, 2022 - APS
We analyze the thermodynamical limit of the quantum metric along critical submanifolds of
theory space. Building upon various results previously known in the literature, we relate its …

[PDF][PDF] Topological invariants and adiabatic principle in correlated systems

工藤耕司, クドウコウジ - 2021 - tsukuba.repo.nii.ac.jp
One of the most important challenges in condensed matter physics is to develop unified and
simple picture for understanding phases of matter. The so-called symmetry breaking is one …