title: Zero-temperature responses of a 3D spin glass in a magnetic field.
abstract: We probe the energy landscape of the 3D Edwards-Anderson spin glass in a magnetic field to test for a spin glass ordering. We find that the spin glass susceptibility is anomalously large on the lattice sizes we can reach. Our data suggest that a transition from the spin glass to the paramagnetic phase takes place at B(c) approximately 0.65, though the possibility B(c) = 0 cannot be excluded. We also discuss the question of the nature of the putative frozen phase.
authors.affiliation: Laboratoire de Physique Théorique et Modèles Statistiques, bât. 100, Université Paris-Sud, F-91405 Orsay, France.
authors.forename: F
authors.initials: F
authors.lastname: Krzakala
authors.forename: J
authors.initials: J
authors.lastname: Houdayer
authors.forename: E
authors.initials: E
authors.lastname: Marinari
authors.forename: O C
authors.initials: OC
authors.lastname: Martin
authors.forename: G
authors.initials: G
authors.lastname: Parisi