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Integrability, chaos and thermalization in a collection of hard rods

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SPL - New statistical physics in living matter: non equilibrium states under adaptive control

Recently developed generalised hydrodynamic theory has been quite successful in understanding non-equilibrium evolution in integrable systems like hard rods which do not relax to Gibbs state. For hard rod gas, I will discuss hydrodynamic evolution from certain non-equilibrium states and demonstrate if and when they approach generalised Gibbs state. I will also discuss how to see the effect of dissipation in such evolution. In the second part of my presentation, I will talk about what happens when the microscopic integrability is broken by trapping the hard rods inside a confining potential. Particularly, I will discuss the possibility of chaos, ergodicity and thermalisation in  trapped hard rods. Understanding these properties of trapped integrable systems has recently drawn a lot of interest.

This talk is part of the Isaac Newton Institute Seminar Series series.

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