Emergent Gapless Quantum Spin Liquid from Deconfined Quantum Critical Point

Explore the emergence of gapless quantum spin liquid near deconfined quantum critical points in this 31-minute conference talk by Zheng-Cheng Gu from The Chinese University of Hong Kong. Delve into the study of global phase diagrams for spin-1/2 J1-J2 and J1-J2-J3 square antiferromagnetic Heisenberg models using state-of-the-art tensor network state methods, specifically the finite projected entangled pair state (PEPS) algorithm. Examine solid evidence supporting the nature of the intermediate nonmagnetic phase as a gapless quantum spin liquid (QSL) with power law decay in both spin-spin and dimer-dimer correlations. Gain insights into potential effective field theories for gapless QSL states and explore topics such as deep confinement critical points, early DMRG, 2D variation approaches, scaling, correlation, detailed calculations and estimations, structure factors, and theoretical understanding. This talk is part of the Tensor Methods and Emerging Applications to the Physical and Data Sciences 2021 workshop series at the Institute for Pure & Applied Mathematics (IPAM), UCLA.

Intro
Deep confinement critical point
Early DMRG
Other 2D variation approaches
Scaling
Correlation
More detailed calculation
More detailed estimation
Potential theoretical understanding
Structure factor
Discussion