Entanglement entropy at infinite-randomness fixed points in higher dimensions.
The entanglement entropy of the two-dimensional random transverse Ising model is studied with a numerical implementation of the strong-disorder renormalization group. The asymptotic behavior of the entropy per surface area diverges at, and only at, the quantum phase transition that is governed by an infinite-randomness fixed point. Here we identify a double-logarithmic multiplicative correction to the area law for the entanglement entropy. This contrasts with the pure area law valid at the infinite-randomness fixed point in the diluted transverse Ising model in higher dimensions.
Lin
Yu-Cheng
YC
Theoretische Physik, Universität des Saarlandes, 66041, Saarbrücken, Germany.
Iglói
Ferenc
F
Rieger
Heiko
H