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pro vyhledávání: '"Shikang Sun"'
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p L022064 (2022)
Exceptional points (EPs) are peculiar band singularities and play a vital role in a rich array of unusual optical phenomena and non-Hermitian band theory. In this Letter, we provide a topological classification of isolated EPs based on homotopy theor
Externí odkaz:
https://doaj.org/article/cd75b0d93bdb4dfcbb93dafb8307c294