Sound Propagation in Nematic Fermi Liquid

We study the longitudinal sound propagation in the electronic nematic Fermi liquid where the
Fermi surface is distorted due to the spontaneously broken rotational symmetry. The behavior of
the sound wave in the nematic ordered state is dramatically different from that in the isotropic
Fermi liquid. The collective modes associated with the fluctuations of the Fermi surface distortion
in the nematic Fermi liquid leads to the strong and anisotropic damping of the sound wave. The
relevance of the nematic Fermi liquid in doped Mott insulator is discussed.

Hae-Young Kee
Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada