The reasonable and unreasonable effectiveness of hydrodynamics in exotic quantum matter

Hong Liu (MIT)
Event Date and Time: 
Thu, 2018-02-08 16:00 - 17:00
Henning 201
Local Contact: 
Fei Zhou

Hydrodynamics has a long and glorious history, describing phenomena ranging from
flows of water, patterns of weather, to star and galaxy formations. During the last
decade, it has also played  important and often surprising  roles in characterizing
various types of exotic quantum matter. In particular, it helped formulating a new
class of quantum matter: quantum liquids without quasiparticles.  I will briefly
review these stories and explain physical reasons
behind these phenomenal new successes of hydrodynamics. I will then discuss some
recent theoretical developments in reformulating hydrodynamics based on action
principle. The reformulation enables a new recent application: characterizing
quantum many-body chaos, where the role of hydrodynamics has been rather unexpected
and its success remains mysterious

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