Electric dipole moment of the electron in YbF molecule

Ab initio calculation of the hyperfine, P-odd, and P,T-odd constants for the YbF molecule was performed with the help of the recently developed technique, which allows to take into account correlations and polarization in the outercore region. The ground state electronic wave function of the YbF molecule is found with the help of the Relativistic Effective Core Potential method followed by the restoration of molecular four-component spinors in the core region of ytterbium in the framework of a non-variational procedure. Core polarization effects are included with the help of the atomic Many Body Perturbation Theory for Yb atom. For the isotropic hyperfine constant A, accuracy of our calculation is about 3% as compared to the experimental datum. The dipole constant Ad (which is much smaller in magnitude), though better than in all previous calculations, is still underestimated by almost 23%. Being corrected within a semiempirical approach for a perturbation of 4f-shell in the core of Yb due to the bond making, this error is reduced to 8%. Our value for the effective electric field on the unpaired electron is 4.9 a.u.=2.5E+10 V/cm.Comment: 7 pages, REVTE

Enhancement of the electric dipole moment of the electron in BaF molecule

We report results of ab initio calculation of the spin-rotational Hamiltonian parameters including P- and P,T-odd terms for the BaF molecule. The ground state wave function of BaF molecule is found with the help of the Relativistic Effective Core Potential method followed by the restoration of molecular four-component spinors in the core region of barium in the framework of a non-variational procedure. Core polarization effects are included with the help of the atomic Many Body Perturbation Theory for Barium atom. For the hyperfine constants the accuracy of this method is about 5-10%.Comment: 8 pages, REVTEX, report at II International Symposium on Symmetries in Subatomic Physics, Seattle 199

Moda, progetto, responsabilità

Il testo è una trascrizione editata della tavola rotonda che si è svolta a Venezia il 18 febbraio 2014 a chiusura del seminario "Insegnare il design della moda". Il testo raccoglie i dialoghi dei partecipanti di fronte a un pubblico di studenti e gli interventi di alcuni di questi ultimi. Partecipanti: Maria Bonifacic, Maria Cristina Cerulli, Patrizia Fiorenza, Samanta Fiorenza, Anthony Knight, Ethel Lotto, Mario Lupano, Amanda Montanari, Gabriele Monti, Desamparados Pardo Cuenca, Simone Sbarbati, Alessandra Vaccari. Studenti intervenuti: Margherita Cesario, Roberta Colla, Florentina Isac