3 papers
cond-mat.str-el2026
Particle-hole Symmetric Slave Boson Method for the Mixed Valence Problem
Liam L. H. Lau, Piers Coleman
We introduce an analytic slave boson method for treating the finite Anderson impurity model. Our approach introduces two bosons to track both valenc…
cond-mat.str-el2025
Oscillate and Renormalize: Fast Phonons Reshape the Kondo Effect in Flat Band Systems
Liam L. H. Lau, Andreas Gleis, Daniel Kaplan +2
We examine the interplay between electron correlations and phonons in an Anderson-Holstein impurity model with an Einstein phonon. When the phonons are slow compared to charge fluc…
cond-mat.str-el2025
Topological Mixed Valence Model for Twisted Bilayer Graphene
Liam L. H. Lau, Piers Coleman
Song and Bernevig (SB) have recently proposed a topological heavy fermion description of the physics of magic angle twisted bilayer graphene (MATBG), involving the hybridization of…