I am a theoretical physicist specializing in emergent behavior in interacting many-particle systems. My work draws inspiration from self-organization and complex dynamics that arise in biological systems and in actively driven materials. In particular, I am interested in pattern formation arising in active mixtures. It is now well established that active mixtures evolve into dynamical states with signatures of broken detailed balance that are distinct from single-component systems. A key driver of this dynamical diversity is non-reciprocity, where effective interactions violate action-reaction symmetry. My research aims to explore and classify the large-scale structures that emerge in both scalar and polar active matter due to this key ingredient. In recent years, my collaborators and I have investigated the role of fluctuations, multi-specificity, and hydrodynamics in such non-reciprocal systems.
Additionally, we find that non-reciprocity plays an important role in determining the manner in which chirality manifests itself in collective dynamics. Chirality, whether intrinsic to active particles or emerging due to non-reciprocity, presents features that are unique in systems that are far from equilibrium. We have explored how chiral effects comes alive in the presence of non-reciprocity and its role in multi-species systems. Recently, we have become interested in the role of memory in living systems. Collections of particles where the past history of evolution influences present behaviour belongs in the general class of non-Hermitian systems.
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