| Title |
Effective Temperature for an Intermittent Bistable Potential |
|
Authors |
Michael Jade Jerez, Norodin Rangaig, and Mark Nolan P. Confesor |
|
Publication date |
2023 |
|
Journal |
Journal of Chemical Physics |
| Volume |
159 |
| Issue |
15 |
| Pages |
154903 |
| Publisher |
American Institute of Physics |
| Abstract |
Thermodynamics of far-from-equilibrium systems often require measurement of effective parameters such as temperature.
Whether such approach is valid for the general case of resetting protocols, active systems, or of confined systems
under time-varying fields is still under investigation. We report on the effect of switching ON-OFF of an asymmetric
bistable potential to the mean first passage time (MFPT) of a probed particle to go from one potential minima to the
other. Experimental results coupled with numerical simulations shows the potential becoming more symmetric at slow
switching. Moreover, the MFPT deviates from equilibrium condition with an effective temperature, Te f f < T, at slow
switching but approaches room temperature, T, at fast switching. For each switching rate, we quantify how far the
system is from equilibrium by measuring deviation from a detailed balance like relation and the net circulation of flux
present in phase-space. Both analysis suggest equilibrium condition are met at high switching. |
| Index terms / Keywords |
Effective temperature; Mean free passage time; intermittent bistable potential |
| DOI |
|
| URL |
|
Mindanao State
University - Iligan Institute of Technology