Thermodynamics vs. Dynamics: Perspectives from phase transitions and fluid turbulence
| Quand ? |
Le 21/06/2016, de 10:45 à 12:00 |
|---|---|
| Où ? | Centre Blaise Pascal |
| Participants |
Mahendra Verma |
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Thermodynamics successfully describes natural phenomena under equilibrium, but principles of dynamics are invoked for nonequilibrium systems. Both these frameworks have different sets of assumptions. In this paper we elucidate how the some of the critical assumptions of equilibrium statistical mechanics are broken in fluid turbulence and phase transitions. Then we discuss phase transition in a dynamical perspective. In this paper we show how a single framework based on large-scale modes successfully explains hysteresis at zero temperature, and two-state coexistence (as in phase transition) in the presence of noise induced by temperature. Our model also explains how the width of hysteresis loop shrinks in the presence of noise, as well as show how initial condition can play a significant role in phase transitions.