Scaling of the Rényi entropies in gapped quantum spin systems: Entanglement-driven order beyond symmetry breaking

S. M. Giampaolo, S. Montangero, F. Dell'Anno +2

We investigate the scaling of the Rényi $\alpha$-entropies in one-dimensional gapped quantum spin models. We show that the block entropies with $\alpha >2$ violate the area law monotonicity…