4 papers
Four-moment criteria for Poisson convergence on Poisson and Rademacher chaoses
Guangqu Zheng
In this paper, we establish Poisson limit theorems on Poisson and Rademacher chaoses. Our principal result is a total-variation bound, valid in both settings, for an integer-valued…
Magnon-Mediated Superconductivity in a 2D Itinerant Ferromagnet with Weak Easy-plane Magnetic Anisotropy
Vladimir Calvera, Heqiu Li, Yijie Wang +2
Motivated by recent observations of superconductivity in a quarter-metal state of spin- and valley- polarized graphene multilayers, we investigate pairing within a ferromagnetic ph…
Multi-Band Exact Diagonalization and an Iteration Approach to Hunt For Fractional Chern Insulators in Rhombohedral Multilayer Graphene
Heqiu Li, B. Andrei Bernevig, Nicolas Regnault
We perform a multi-band exact diagonalization (ED) study of rhombohedral pentalayer graphene twisted on hexagonal boron nitride with a focus on fractional Chern insulators (FCI) in…
Valley polarization, magnetization, and superconductivity in bilayer graphene near the van Hove singularity
Alex Friedlan, Heqiu Li, Hae-Young Kee
The discovery of Mott insulators and superconductivity in twisted bilayer graphene has ignited intensive research into strong correlation effects in other stacking geometries. Bern…