RVB signatures in the spin dynamics of the square-lattice Heisenberg antiferromagnet E. A. Ghioldi, M. G. Gonzalez, L. O. Manuel and A. E. Trumper EPL, 113 5 (2016) 57001 Published online: 17 March 2016 DOI: 10.1209/0295-5075/113/57001