Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 3: Quantum Gases: Bosons I

Q 3.6: Vortrag

Montag, 8. März 2010, 15:15–15:30, E 001

Quantum Kinetic Theory of Superfluid Internal Convection — •Lukas Gilz and James R. Anglin — TU Kaiserslautern, Kaiserslautern, Germany

When a superfluid is heated locally one observes a superfluid current from colder to hotter regions, while the normal fluid flow is directed in the opposite direction. This 'internal convection' is modeled well by Landau's phenomenological two fluid model. We obtain a more fundamental description of internal convection by extending standard Quantum Kinetic Theory to include two reservoirs of different temperatures. We find that internal convection is caused by non-resonant scattering events that do not conserve momentum.