2 papers
cond-mat.mes-hall2026
Stable boundary modes for fragile topology from spontaneous PT-symmetry breaking
Kang Yang, Fei Song, Piet W. Brouwer
Two-dimensional topological insulators protected by nonlocal symmetries or with fragile topology usually do not admit robust in-gap edge modes due to the incompatibility between th…
math.NA2017
Multiscale discontinuous Petrov--Galerkin method for the multiscale elliptic problems
Song Fei, Deng Weibing
In this paper we present a new multiscale discontinuous Petrov--Galerkin method (MsDPGM) for multiscale elliptic problems. This method utilizes the classical oversampling multiscal…