4 papers · 1 filter
Diagrammatic perturbation theory and the pseudogap
P. Monthoux
We study a model of quasiparticles on a two-dimensional square lattice coupled to Gaussian distributed dynamical fields. The model describes quasiparticles coupled to spin or charg…
Field-induced Antiferromagnetism and the Kondo Insulator-to-Metal Transition
K. S. D. Beach, Patrick A. Lee, P. Monthoux
The Kondo lattice model, augmented by a Zeeman term, serves as a useful model of a Kondo insulator in an applied magnetic field. A variational mean field analysis of this system on…
On Migdal's theorem and the pseudogap
P. Monthoux
We study a model of quasiparticles on a two-dimensional square lattice coupled to Gaussian distributed dynamical molecular fields. The model describes quasiparticles coupled to spi…
Sensitivity of the Superconducting Transition Temperature to Changes in the Spin-Fluctuation Spectral Weight
P. McHale, P. Monthoux
In the simplest model of magnetic pairing, the transition temperature to the superconducting state depends on the dynamical susceptibility . We discuss how is a…