3 papers
cond-mat.str-el2026
Accessing Gapped Chiral Phase with Auxiliary-Assisted PEPS
Sen Niu, Rui-Zhen Huang
It has been controversial whether infinite projected entangled pair state (PEPS) can faithfully describe chiral gapped phases in two dimensions or not. Finite-bond-dimension PEPS c…
cond-mat.str-el2025
Quantum anomalous Hall effects and emergent Hall ferromagnets at fractional filling of helical trilayer graphene
Sen Niu, Jason Alicea, D. N. Sheng +1
Helical trilayer graphene realizes a versatile moiré system for exploring correlated topological states emerging from high Chern bands. Motivated by recent experimental observation…
cond-mat.str-el2024
Quantum phase diagram and non-abelian Moore-Read state in double twisted bilayer graphene
Sen Niu, Yang Peng, D. N. Sheng
Experimental realizations of Abelian fractional Chern insulators (FCIs) have demonstrated the potentials of moiré systems in synthesizing exotic quantum phases. Remarkably, twisted…