@archakp.bsky.social
Just a garden-variety quantum physicist. Also interested in music. Assistant Professor in Physics at IIT Hyderabad, India.......will be talking mainly about recent research works....
Introducing "Quantum non-Markovian Hatano-Nelson model": arxiv.org/abs/2511.05328
Perhaps the first exploration of a non-Markovian nonreciprocal quantum lattice, how it arises exactly, and some of its special properties.
[Note: Non-Markovian is generic, Markovian is approximate.]
We have now made our recently discovered extreme non-Markovian quantum Mpemba effect doi.org/10.1103/Phys... relevant for quantum impurity model simulations: "Accelerated calculation of impurity Green's functions exploiting the extreme Mpemba effect" arxiv.org/abs/2510.26651
09.11.2025 04:46 — 👍 1 🔁 0 💬 0 📌 0
While devising tensor network techniques to extract dynamical maps for open quantum non-Markovian systems (doi.org/10.1063/5.02...), we discovered an extreme Non-Markovian quantum Mpemba effect, where an initial state reaches steady-state within the memory time! doi.org/10.1103/Phys...
09.11.2025 04:44 — 👍 0 🔁 0 💬 0 📌 0
Then, we generalized our previous findings of how transfer matrix exceptional points lead to universal transport properties near band edges (doi.org/10.1103/Phys..., doi.org/10.1103/Phys...) to cases with finite but long-range hoppings: Published in PRB: doi.org/10.1103/Phys...
09.11.2025 04:34 — 👍 0 🔁 0 💬 0 📌 0
2025 started with discovering connection between van-Hove singularities, which are critical points of band structure, and exceptional points of transfer matrices, which are critical points of non-Hermitian matrices, Published in PRB Letters: doi.org/10.1103/Phys...
09.11.2025 04:22 — 👍 0 🔁 0 💬 1 📌 0New to bluesky. Mainly interested in physics.
09.11.2025 03:55 — 👍 2 🔁 0 💬 0 📌 0
