Research lectures, seminars and events
The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but wish to enquire about attending one of the events please contact the organiser or host department.
Maths HEP Lunchtime Seminars: Non-universality of hydrodynamics
The late-time long-distance behaviour of a many-body system is usually described by the framework of hydrodynamics or similar condensed matter models based on the (possibly spontaneously broken) symmetries that the system enjoys. These models are characterised by a set of transport coefficients, such as viscosities and conductivity, that capture the transport properties of conserved charges over macroscopic scales. In this talk, we will investigate a new kind of transport coefficients that are not present in the usual formulation of hydrodynamics, but nonetheless affect the late time dynamics of conserved charges. Physically, these new coefficients arise due to the interaction of the hydrodynamic degrees of freedom with the background bath of thermal noise present out of equilibrium. For the purposes of this investigation, I will spend some time to review the newly developed Schwinger-Keldysh effective action formulation of non-equilibrium field theories, which allows one to systematically keep track of thermal noise and their correlations. The talk will be based on the recent preprint https://arxiv.org/abs/2009.01356.
Meeting ID: 997 6815 0791 Passcode: 418188
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