PHYS brown bag seminar: Entropy can also decrease
Topic presented by Shilpi Singh (PICO). Join us for science and pizza in the Nanotalo lobby!
The second law of thermodynamics implies that in mesoscopic systems entropy increases on average but leaves open the possibility for these systems to transiently absorb heat from their environment. The probability of heat absorbed and dissipated by the system in a finite time interval is known to be governed by fluctuation theorems. These universal results have been already verified in experiments. Another method to characterize extreme deviations from the average behaviours is to consider extreme-value statistics of thermodynamic fluxes (entropy production, heat etc.).
In the talk, I will give a brief introduction to stochastic thermodynamics, and the experimental results obtained using an electronic system to study statistics of entropy production focusing on rare events.