Abstract
We study the quantum critical behavior in an isotropic Fermi liquid in the vicinity of a zero-temperature density-wave transition at a finite wave vector . We show that, near the transition, the Landau damping of the soft bosonic mode yields a crossover in the fermionic self-energy from to , where and are momentum and frequency. Because of this self-generated locality, the fermionic effective mass diverges right at the quantum critical point, not before; i.e., the Fermi liquid survives up to the critical point.
- Received 15 May 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.046404
©2005 American Physical Society