Dispersion instability in strongly interacting electron liquids
Dispersion instability in strongly interacting electron liquids
We show that the low density strongly interacting electron liquid, interacting via the long-range Coulomb interaction, could develop a dispersion instability at a critical density associated with the approximate flattening of the quasiparticle energy dispersion. At the critical density the quasiparticle effective mass diverges at the Fermi surface, but the …