报告题目：Spin Liquid Ground State of the Spin-1/2 Square J_1-J_2 Heisenberg Model

报 告 人：Dr. Hong Yao(姚宏), Stanford University

报告时间：1月9日上午10:00

报告地点：清华大学高等研究院 科学馆322报告厅

报告摘要：We perform highly accurate density matrix renormalization group (DMRG) simulations to investigate the ground state properties of the spin-1/2 antiferromagnetic square lattice Heisenberg J_1-J_2 model. Based on studies of numerous long cylinders with circumferences of up to 10 lattice spacings, we obtain strong evidence for a topological quantum spin liquid state in the region 0.41.