Role of generic scale invariance in a Mott transition from a U (1) spin-liquid insulator to a Landau Fermi-liquid metal
We investigate the role of generic scale invariance in a Mott transition from a U (1) spin-
liquid insulator to a Landau Fermi-liquid metal, where there exist massless degrees of
freedom in addition to quantum critical fluctuations. Here, the Mott quantum criticality is
described by critical charge fluctuations, and additional gapless excitations are U (1) gauge-
field fluctuations coupled to a spinon Fermi surface in the spin-liquid state, which turn out to
play a central role in the Mott transition. An interesting feature of this problem is that the …
liquid insulator to a Landau Fermi-liquid metal, where there exist massless degrees of
freedom in addition to quantum critical fluctuations. Here, the Mott quantum criticality is
described by critical charge fluctuations, and additional gapless excitations are U (1) gauge-
field fluctuations coupled to a spinon Fermi surface in the spin-liquid state, which turn out to
play a central role in the Mott transition. An interesting feature of this problem is that the …