Field-theoretic model for chemotaxis in run and tumble particles

In this paper we develop a field-theoretic description for run and tumble chemotaxis, based on density functional of crystalline materials modified to capture orientational ordering. We show that framework, with its in-built multi-particle interactions, soft-core repulsion elasticity is ideal describing continuum collective phases particle resolution, but diffusive timescales. our model exhibits aggregation in an externally imposed constant attractant field, as observed phototactic or thermotactic agents. also captures through self-chemotaxis, important mechanism aids quorum dependent cellular interactions.