Effective diffusion of a tracer in active bath: A path-integral approach

Open Access

Figure 1

Schematic diagram of a tracer particle with coordinate x in an active particle bath consisting of self-propulsion particles at r_i, i=1,2,…, N. The tracer-bath interaction is $U (| x - r_{i} |)$ , and the bath-bath interaction is $V (| r_{i} - r_{j} |)$ . The wave lines label the thermal noises.

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