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Quantum limited transport in ultracold atomic gases

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Can a real fluid flow without friction? Following the conjecture that quantum mechanics imposes a universal lower bound on the shear viscosity, this question is being studied intensively in several fields of physics ranging from quark-gluon plasmas to ultracold atomic gases. I will review the origin of this bound and present results for the shear viscosity of strongly interacting Fermi gases. Motivated by a recent experiment with spin-polarized clouds of atoms, I will discuss the prospect of a quantum bound for spin transport.

This talk is part of the Theory of Condensed Matter series.

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