@article { 3242,
	title = {Entanglement of low-energy excitations in Conformal Field Theory},
	volume = {106},
	year = {2011},
	pages = {201601},
	publisher = {Physical Review Letters},
	address = {Phys.Rev.Lett.106:201601,2011},
	URL = {http://arxiv.org/abs/1101.2881 },
	author = {Francisco Castilho Alcaraz, Miguel Ibanez Berganza, German Sierra}
}