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ICMT Seminar: "Holographic Vortex Liquids and Superfluid Turbulence"

Event Type
Seminar/Symposium
Sponsor
Department of Physics
Location
280 MRL, 104 S. Goodwin
Date
Feb 3, 2014   12:00 pm  
Speaker
Dr. Hong Liu, Massachusetts Institute of Technology
Contact
Stephanie Johansson
E-Mail
sjohanss@illinois.edu
Phone
217-300-4241
Views
594
Originating Calendar
Physics - Institute for Condensed Matter Theory Seminar

Superfluid turbulence is a fascinating phenomenon for which a satisfactory theoretical framework is lacking. Holographic duality provides a systematic approach to studying such quantum turbulence by mapping the dynamics of a strongly interacting quantum liquid into the dynamics of classical gravity. We use this gravitational description to numerically construct turbulent flows in a holographic superfluid in two spatial dimensions. We find that the superfluid kinetic energy spectrum obeys the Kolmogorov −5/3 scaling law, with energy injected at long wavelengths undergoing a direct cascade to short wavelengths where dissipation by vortex annihilation and vortex drag becomes efficient. This dissipation has a simple gravitational interpretation as energy flux across a black hole horizon.

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