Active Glassy systems: Two of the major outstanding questions in theoretical physics are: how to describe (a) driven or active systems far from equilibrium and (b) disordered systems, typically characterized by glassy relaxation. We are interested in exploring a unified theoretical and computational description of such out-of equilibrium disordered matter and a canonical example is an active glassy system. 

Selected publications:   (i) Proc. Nat. Acad. Sci., 115, 30 (2018), 

                                       (ii) Nat. Commun., 11, 2581 (2020) 

                                       (iii) Phys. Rev. Lett. 125, 218001 (2020) 

                                       (iv) Proc. Nat. Acad. Sci., 118, 39 (2021)

Non-reciprocal Systems:  Fundamental interactions (e.g. gravity or electromagnetic forces) or  equilibrium effective interactions (e.g. the Asakura–Oosawa attraction, Casimir forces) always obey action- reaction symmetry. This paradigm can break down if either the medium or the interacting particles are driven out of equilibrium, resulting in non-reciprocal interactions. We are interested in both the emergence and the spectacular effects of such non-reciprocal pairwise interactions. 

Selected publications:  (i) Nat. Commun., 13, 4533 (2022) 

                                      (ii) Phys. Rev. E 109, L062602 (2024)