title: Quantum chaos and regularity in ultracold Fermi gases.
abstract: Quantum fluctuation of the energy is studied for an ultracold gas of interacting fermions trapped in a three-dimensional potential. Periodic-orbit theory is explored, and energy fluctuations are studied versus the particle number for generic regular and chaotic systems, as well as for a system defined by a harmonic confinement potential. Temperature effects on the energy fluctuations are investigated.
authors.affiliation: Mathematical Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Puig von Friesen
authors.forename: M
authors.initials: M
authors.lastname: Ogren
authors.forename: S
authors.initials: S
authors.lastname: Aberg