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Explore the thermal transport properties of liquid ³He and metallic Fermi liquids in this advanced physics seminar presented by Kamran Behnia from CNRS & ESPCI, Paris. Examine how Landau's theory of Fermi liquids explains electron behavior in metals despite strong repulsive interactions, mapping strongly interacting fermion systems to quasi-particle systems with weak residual interactions. Discover that thermal conductivity in ³He below its degeneracy temperature involves not only Landau's quasi-particles but also a distinct contribution from collective modes in the hydrodynamic limit, representing a quantum version of the Bridgman equation for classical liquid thermal conductivity. Investigate how collective modes may influence transport in strongly correlated Fermi liquids that deviate from quadratic resistivity behavior below the Fermi degeneracy temperature. Gain insights into cutting-edge research connecting quantum many-body physics, condensed matter theory, and experimental observations in exotic quantum systems through detailed analysis of heat-carrying sound phenomena and their implications for understanding strongly correlated quantum materials.
