Stochastic pumps of interacting particles

Speaker
Saar Rahav (Technion)
Date
22/10/2015 - 16:30 - 15:30Add to Calendar 2015-10-22 15:30:00 2015-10-22 16:30:00 Stochastic pumps of interacting particles The design and synthesis of molecules that operate like microscopic machines is of fundamental importance. Such systems can be modelled theoretically by stochastic dynamics in which the system makes thermally activated transitions between a finite set of coarse-grained states. Artificial molecular machines can be driven away from thermal equilibrium in ways not found in biological molecular motors, in particular by time variation of external parameters.  Such systems are often termed stochastic pumps. We demonstrate that a seemingly natural protocol of driving such systems does not work.  We argue that this result holds also for systems of several particles with zero range interactions. Resnick Building 209, room 210 המחלקה לפיזיקה physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
Resnick Building 209, room 210
Abstract

The design and synthesis of molecules that operate like microscopic machines is of fundamental importance. Such systems can be modelled theoretically by stochastic dynamics in which the system makes thermally activated transitions between a finite set of coarse-grained states. Artificial molecular machines can be driven away from thermal equilibrium in ways not found in biological molecular motors, in particular by time variation of external parameters.  Such systems are often termed stochastic pumps. We demonstrate that a seemingly natural protocol of driving such systems does not work.  We argue that this result holds also for systems of several particles with zero range interactions.

תאריך עדכון אחרון : 27/08/2015