354 citations · 431 across the 3 of their papers we have counts for
5 papers
Observation of non-Hermitian topology and its bulk-edge correspondence in an active mechanical metamaterial
Ananya Ghatak, Martin Brandenbourger, Jasper van Wezel +1
Topological edge modes are excitations that are localized at the materials' edges and yet are characterized by a topological invariant defined in the bulk. Such bulk-edge correspon…
A new Berry phase term in parity-time symmetric non-Hermitian spin-1/2 quantum systems
Ananya Ghatak, Tanmoy Das
Recently developed parity () and time-reversal () symmetric non-Hermitian quantum theory is envisioned to have far-reaching implications in basic science…
New topological invariants in non-Hermitian systems
Ananya Ghatak, Tanmoy Das
Both theoretical and experimental studies of topological phases in non-Hermitian systems have made a remarkable progress in the last few years of research. In this article, we revi…
Theory of superconductivity with non-Hermitian and parity-time reversal symmetric cooper pairing symmetry
Ananya Ghatak, Tanmoy Das
Recently developed parity (P) and time-reversal (T) symmetric non-Hermitian systems govern a rich variety of new and characteristically distinct physical properties, which may or m…
Hartman-Fletcher effect for array of complex barriers
Ananya Ghatak, Mohammad Hasan, Bhabani Prasad Mandal
We calculate the time taken by a wave packet to tunnel through a series of complex barrier potentials using stationary phase method to show its saturation (Hartman-Fletcher effect)…