Critical stability

Session

Clusters; resonances

14 oct. 2008, 15:00

Ettore Majorama Centre for Scientific Culture

42. Interaction Blockade and Vortices in Atom Traps

Prof. Stephanie Reimann (Lund University)

14/10/2008 15:00

Talks at Critical Stability V (Erice, October 2008)

Normal

Many analogies exist between nanostructured quantum systems such as quantum dots, and trapped ultra-cold atom gases. The newly emerging "atomtronics" makes phenomena such as Bose-Einstein condensation accessible for the micro- and nano-design of future quantum devices. In this talk, we shall discuss how effects similar to Coulomb blockade in quantum dots may occur in systems of ultracold,...

25. Two-boson correlations in various one-dimensional traps

Prof. Anna Okopinska (University of Humanities and Sciences)

14/10/2008 15:35

Talks at Critical Stability V (Erice, October 2008)

Normal

A one-dimensional system of two trapped bosons which interact through a contact potential is studied using the optimized configuration interaction method. The rapid convergence of the method is demonstrated for a series of trapping potentials of convex and non-convex shapes. The energy spectra, as well as natural orbitals and their occupation numbers are determined in function of the...

43. Three-body decays of many-body resonances

Dr Raquel Alvarez-Rodriguez (INFN Pisa)

14/10/2008 16:10

Talks at Critical Stability V (Erice, October 2008)

Normal

We discuss the three-body decay mechanisms of many-body resonances. Sequential decays proceed via two-body configurations after emission of the third particle. In direct decay all three particles leave simultaneously their interaction regions. The intermediate paths within the interaction regions are not observables and only accessible through models. The momentum distributions carry, apart...

23. Theoretical investigation of the spectra of rotating trimers by means of a variational quantum method based in distributed Gaussian functions

Dr Tomas Gonzalez-Lezana (Instituto de Fisica Fundamental, CSIC)

14/10/2008 17:00

Talks at Critical Stability V (Erice, October 2008)

Normal

We have recently developed an approximate method to study the rovibrational spectra of molecular trimers, based in the use of distributed Gaussian functions (DGFs) to describe the interparticle distances [1,2]. The main assumption is to consider that rotation and vibration can be treated separately. The purely vibrational problem for a zero total angular momentum, J=0, is solved by...

66. Scattering processes in a framework of Faddeev approach

Prof. Elena Kolganova (Dubna, Russia)

14/10/2008 17:35

Normal

Method of scattering calculations on three-body systems using differential Faddeev equations is discussed. An algorithm for calculating three-body resonances is considered and applied to the study of Helium trimer.