JFD Mendoza & FNC Paraan. Entanglement and fluctuations in the Majumdar-Ghosh model ground state, presented at Joint 13th Asia Pacific Physics Conference and 22nd Australian Institute of Physics Congress, QUICC S1 (Brisbane, Australia, 2016).
Abstract
The matrix product state representation of the ground state of the Majumdar–Ghosh Model (MGM) is used to obtain the reduced density matrix of a block of x spins in a periodic MGM chain. This calculation leads to exact expressions for the entanglement entropy and subsystem fluctuations as a function of block length. We find that the entanglement entropy saturates exponentially to ln 3, even as the subsystem Hilbert space is five-dimensional.
Conference
Joint 13th Asia Pacific Physics Conference and 22nd Australian Institute of Physics Congress
Conference Location
Brisbane, Australia
Conference Date
4-8 Dec 2016