title: Cold fermionic atoms in two-dimensional traps: pairing versus Hund's rule.
abstract: The microscopic properties of few interacting cold fermionic atoms confined in a two-dimensional (2D) harmonic trap are studied by numerical diagonalization. For repulsive interactions, a strong shell structure dominates, with Hund's rule acting at its extreme for the midshell configurations. In the attractive case, odd-even oscillations due to pairing occur simultaneously with deformations in the internal structure of the ground states, as seen from pair correlation functions.
authors.affiliation: CNR-INFM National Research Center S3, Via Campi 213/A, 41100 Modena, Italy. rontani@unimore.it
authors.forename: M
authors.initials: M
authors.lastname: Rontani
authors.forename: J R
authors.initials: JR
authors.lastname: Armstrong
authors.forename: Y
authors.initials: Y
authors.lastname: Yu
authors.forename: S
authors.initials: S
authors.lastname: Aberg
authors.forename: S M
authors.initials: SM
authors.lastname: Reimann