3 papers
cond-mat.mes-hall2026
Hidden topology and strong quantum metric bounds in trivial systems
Chang-An Li, Yulin Qin, Bo Fu +1
The quantum metric integral (QMI) in two-dimensional (2D) systems is conventionally bounded from below by the Chern number. For systems with zero Chern number or identically vanish…
cond-mat.other2026
Regularized universal topological markers for Dirac systems
Yulin Qin, Chang-An Li, Jian Li
Topological markers provide an efficient and powerful characterization of topological features of many systems, especially when the translation symmetry is broken. Recently, a univ…
cond-mat.mes-hall2025
Semimetals without correspondence between the topological charge of nodal line/surface and Fermi arc
Xue-Min Yang, Jiang-Shan Chen, Ying Chen +2
It is generally believed that there is a correspondence between the topological charge of nodal points or lines and the presence of Fermi arcs. Using a -inv…