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physics.optics2026
Temporal Localisation of Waves from Imaginary Line-Gap Topology
Carlos Camacho, Tom Sheppard, Joshua Feis +4
For non-Hermitian Hamiltonians, gain, loss, and non-reciprocity produce complex eigenvalues which, in turn, facilitate different kinds of topological phases. One example is the ima…
physics.optics2026
Disorder-immune momentum band winding topology
Andrea Steinfurth, Sebastian Weidemann, Julia Görsch +4
Time is the odd dimension out: Unlike space, it follows the arrow of time, forbidding back-reflections and requiring momentum yet not energy conservation. Tailored temporal variati…