Abstract

The self-propelled particles take energy from the environment and break some symmetry to move on a fluid. Bacteria, like E. Coli, breaks time reversal symmetry of hydrodynamics equations, Janus particles break the spacial symmetry with its two different faces. In this sense we propose a model of three particles A B C joined by harmonic potential (a dumbbell), they are immersed in a bath of small Lenard Jones particles. Moreover, an external mechanism that forces the oscillation of the dumbbell is included, to improve the self propelled behavior. From this model is possible to make a thermodynamics analysis using the Hamiltonian of the system and stochastic thermodynamics framework.