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Nonlinear waves in an anti-Hermitian lattice with cubic nonlinearity
(Elsevier, 2020)
In an anti-Hermitian linear system, all energy eigenvalues are purely imaginary and the corresponding eigenvectors are orthogonal. This implies that no stationary state is available in such systems. We consider an ...
PT symmetric Floquet topological phase in SSH model
(Elsevier Science Bv, 2018)
We consider periodically modulated Su-Schrieffer-Heeger (SSH) model with gain and loss. This model, which can be realized with current technology in photonics using waveguides, allows us to study Floquet topological ...