First-passage-time statistics of active Brownian particles: A perturbative approach
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We study the first-passage-time (FPT) properties of active Brownian particles to reach an absorbing wall in two dimensions. Employing a perturbation approach, we obtain exact analytical predictions for the survival and FPT distributions for small Péclet numbers, measuring the importance of self-propulsion relative to diffusion. While randomly oriented active agents reach the wall faster than their passive counterpart, their initial orientation plays a crucial role in the FPT statistics. Using the median as a metric, we quantify this anisotropy and find that it becomes more pronounced at distances where persistent active motion starts to dominate diffusion.
Details
| Original language | English |
|---|---|
| Article number | 054113 |
| Journal | Physical Review E |
| Volume | 111 |
| Issue number | 5 |
| Publication status | Published - May 2025 |
| Peer-reviewed | Yes |