title: Can Ab Initio Theory Explain the Phenomenon of Parity Inversion in ^{11}Be?
abstract: The weakly bound exotic ^{11}Be nucleus, famous for its ground-state parity inversion and distinct n+^{10}Be halo structure, is investigated from first principles using chiral two- and three-nucleon forces. An explicit treatment of continuum effects is found to be indispensable. We study the sensitivity of the ^{11}Be spectrum to the details of the three-nucleon force and demonstrate that only certain chiral interactions are capable of reproducing the parity inversion. With such interactions, the extremely large E1 transition between the bound states is reproduced. We compare our photodisintegration calculations to conflicting experimental data and predict a distinct dip around the 3/2_{1}^{-} resonance energy. Finally, we predict low-lying 3/2^{+} and 9/2^{+} resonances that are not or not sufficiently measured in experiments.
authors.affiliation: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
authors.forename: Angelo
authors.initials: A
authors.lastname: Calci
authors.affiliation: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
authors.forename: Petr
authors.initials: P
authors.lastname: Navrátil
authors.affiliation: Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany.
authors.forename: Robert
authors.initials: R
authors.lastname: Roth
authors.affiliation: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
authors.forename: Jérémy
authors.initials: J
authors.lastname: Dohet-Eraly
authors.affiliation: Lawrence Livermore National Laboratory, P.O. Box 808, L-414, Livermore, California 94551, USA.
authors.forename: Sofia
authors.initials: S
authors.lastname: Quaglioni
authors.affiliation: Institut de Physique Nucléaire, Université Paris-Sud, IN2P3/CNRS, F-91406 Orsay Cedex, France.|CEA, DAM, DIF, F-91297 Arpajon, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Hupin