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quant-ph2024★ 5 cited
Many-body Liouvillian dynamics with a non-Hermitian tensor-network kernel polynomial algorithm
Guangze Chen, Jose L. Lado, Fei Song
Understanding the dynamics of open quantum many-body systems is a major problem in quantum matter. Specifically, efficiently solving the spectrum of the Liouvillian superoperator g…
quant-ph2022★ 40 cited
Topological spin excitations in non-Hermitian spin chains with a generalized kernel polynomial algorithm
Guangze Chen, Fei Song, Jose L. Lado
Spectral functions of non-Hermitian Hamiltonians can reveal the existence of topologically non-trivial line gaps and the associated topological edge modes. However, the computation…