Inertial particle under active fluctuations
- We study the underdamped motion of a passive particle in an active environment. Using the phase space path integral method we find the probability distribution function of position and velocity for a free and a harmonically bound particle. The environment is characterized by an active noise which is described as the Ornstein-Uhlenbeck process (OUP). Taking two similar, yet slightly different OUP models, it is shown how inertia along with other relevant parameters affect the dynamics of the particle. Further we investigate the work fluctuations of a harmonically trapped particle by considering the trap center being pulled at a constant speed. Finally, the fluctuation theorem of work is validated with an effective temperature in the steady-state limit.
| Author details: | Koushik GoswamiORCiD |
|---|---|
| DOI: | https://doi.org/10.1103/PhysRevE.105.044123 |
| ISSN: | 2470-0045 |
| ISSN: | 2470-0053 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/35590542 |
| Title of parent work (English): | Physical review E, Statistical, nonlinear, and soft matter physics |
| Subtitle (English): | diffusion and work distributions |
| Publisher: | American Physical Society |
| Place of publishing: | College Park |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2022/04/15 |
| Publication year: | 2022 |
| Release date: | 2024/01/04 |
| Volume: | 105 |
| Issue: | 4 |
| Article number: | 044123 |
| Number of pages: | 13 |
| Funding institution: | IIT Bombay through the institute postdoctoral fellowship |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| Peer review: | Referiert |
