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Interaction of asymmetric $\phi^6$ kinks with a spatially localized$\mathcal{PT}$-symmetric perturbation is investigated numerically. It has beenshown that when the kink (antikink) hits the defect from the gain side, a finalvelocity of the kink decreases (increases), while for the kink and antikinkcoming from the opposite direction their final velocities remain unchanged. Itis also found that when the kink interacts with the defect from the gain sidemultiple pair of the kink-antikink are formed from small amplitude waves(phonons) in the final states depending on the initial velocity of the initialkink and parameter of the perturbation.

Scattering of the asymmetric $\phi^6$ kinks from a $\mathcal{PT}$-symmetric perturbation: Creation of multiple pairs of kink-antikink from phonons