Anomalous hybridization of spectral winding topology in quantized
steady-state responses
- URL: http://arxiv.org/abs/2112.05191v1
- Date: Thu, 9 Dec 2021 19:54:25 GMT
- Title: Anomalous hybridization of spectral winding topology in quantized
steady-state responses
- Authors: Hui-Qiang Liang, Sen Mu, Jiangbin Gong, Linhu Li
- Abstract summary: In non-Hermitian systems, the spectral winding topology yields quantized steady-state response.
We show that eigen-solutions are effectively not hybridized between the two chains.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantized response is one distinguishing feature of a topological system. In
non-Hermitian systems, the spectral winding topology yields quantized
steady-state response. By considering two weakly coupled non-Hermitian chains,
we discover that the spectral winding topology of one chain can be probed by a
steady-state response defined solely on the other chain, even when other
important properties, e.g., {energetics} and entanglement entropy, indicate
that eigen-solutions are effectively {not hybridized} between the two chains.
This intriguing phenomenon, as carefully investigated in a large parameter
space with a varying system size, not only offers a new angle to understand
interchain signal propagation in a non-Hermitian setting but also reveals
unexpected physics of spectral winding topology vs quantized response.
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