3 papers
cond-mat.str-el2026
Bootstrapping Flat-band Superconductors: Rigorous Lower Bounds on Superfluid Stiffness
Qiang Gao, Zhaoyu Han, Eslam Khalaf
The superfluid stiffness fundamentally constrains the transition temperature of superconductors, especially in the strongly coupled regime. However, accurately determining this inh…
cond-mat.str-el2025
Exact models of chiral flat-band superconductors
Zhaoyu Han, Jonah Herzog-Arbeitman, Qiang Gao +1
Recent experiments have reported the surprising observation of superconductivity in flavor polarized, nearly flat bands (FBs) of rhombohedral graphene. Motivated by these findings,…
cond-mat.str-el2025
Bootstrapping the Quantum Hall problem
Qiang Gao, Ryan A. Lanzetta, Patrick Ledwith +2
The bootstrap method aims to solve problems by imposing constraints on the space of physical observables, which often follow from physical assumptions such as positivity and symmet…