Quantum metric of non-Hermitian Su-Schrieffer-Heeger systems
Quantum metric of non-Hermitian Su-Schrieffer-Heeger systems
Topological insulators have been studied intensively over the last decades. Earlier research focused on Hermitian Hamiltonians, but recently, peculiar and interesting properties were found by introducing non-Hermiticity. In this work, we apply a quantum geometric approach to various Hermitian and non-Hermitian versions of the Su-Schrieffer-Heeger (SSH) model. We find that …