scholarly journals Exceptional points of the eigenvalues of parameter-dependent Hamiltonian operators

2021 ◽  
Vol 136 (1) ◽  
Author(s):  
Paolo Amore ◽  
Francisco M. Fernández
2020 ◽  
Vol 102 (24) ◽  
Author(s):  
Yi-Xin Xiao ◽  
Kun Ding ◽  
Ruo-Yang Zhang ◽  
Zhi Hong Hang ◽  
C. T. Chan

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