Foundations and applications of the macroscopic fluctuation theory

TYPECondensed Matter Seminar
Speaker:Prof. Gianni Jona-Lasinio
Affiliation: Sapienza University of Rome
Parent Event:Non-equilibrium thermodynamics via the study of large fluctuations
Time:14:30 - 15:30
Location:Lidow Nathan Rosen (300)
Abstract:The macroscopic fluctuation theory is based on a single formula for the probability of joint fluctuations of thermodynamic variables and currents and its properties under time reversal. After giving an idea about its derivation we shall use it to introduce a natural generalization of the free energy and a new functional describing the thermodynamics of the time averaged currents. The singularities of these functionals are associated with phase transitions. An important consequence of the time reversal properties of the basic formula is that the hydrodynamic  currents split into orthogonal parts having opposite time reversal behavior. Some applications will be discussed.