Entanglement entropy and massless phase in the antiferromagnetic three-state quantum chiral clock model

Yan-Wei Dai,1,2 Sam Young Cho,2,3,* Murray T. Batchelor,2,4,† and Huan-Qiang Zhou2,3 1College of Materials Science and Engineering, Chongqing University, Chongqing 400044, People’s Republic of China 2Centre for Modern Physics, Chongqing University, Chongqing 400044, People’s Republic of China 3Department of Physics, Chongqing University, Chongqing 400044, People’s Republic of China 4Mathematical Sciences Institute and Department of Theoretical Physics, Research School of Physics and Engineering, Australian National University, Canberra ACT 2601, Australia (Received 19 September 2016; revised manuscript received 24 November 2016; published 18 January 2017)