Entanglement Entropy and Quantum Phase Transition in the $O(N)$ $\\sigma$-model

JIUNN-WEI CHEN2018-09-102018-09-102014-11http://inspirehep.net/record/1327270http://scholars.lib.ntu.edu.tw/handle/123456789/386264Entanglement Entropy and Quantum Phase Transition in the $O(N)$ $\\sigma$-modelworking paper