Date: 8th September 2022, 10:00am

Speaker: Hongbao Zhang 张宏宝

Affiliation: Beijing Normal University

Tencent/VooV Meeting ID: 973-6909-6865

Online Meeting Link: https://meeting.tencent.com/dm/ZGVDkboF0pFP

Abstract：

The conventional approach to the dissipative turbulence is phenomenological. Compared to this, holographic duality provides a first principles description of dissipation in vortex dynamics in terms of excitations absorbed by the bulk black holes. In this talk, I will report how to select a proper phenomenological effective theory to model the dissipative quantum turbulence through the lens of holography. In particular, we argue that Landau’s model rather than the much more widely used one (abbreviated as KDGP)  is the appropriate one to simulate the vortex dynamics at fully non-linear level. In passing, we also point out KDGP is plagued by its pathological dispersion relation, which has never been noticed before.