Mathematical Modeling of Ultracold Few-Body Processes in Atomic Traps

Weakly bound atomic trimers in ultracold traps

M. T. Yamashita, T. Frederico, Lauro Tomio, and A. Delfino Laboratório do Acelerador Linear, Instituto de Fı́sica da USP, 05315-970 São Paulo, Brazil Departamento de Fı́sica, Instituto Tecnológico de Aeronáutica, Centro Técnico Aeroespacial, 12228-900 São José dos Campos, Brazil Instituto de Fı́sica Teórica, Universidade Estadual Paulista, 01405-900 São Paulo, Brazil Instituto de Fı́sica, Universid...

Ultracold halo dimers and few-body physics

Ultracold dimers in s-wave states are in the quantum halo regime1, if their binding energy is much smaller than a typical energy set by the long-range van der Waals interaction. In this regime, the scattering length is very large and details of the interatomic interaction become irrelevant. Studying the interactions of halo dimers provides experimental access to universal phenomena in few-body ...

Control and Dynamics of Few-Body Systems at Ultracold Temperatures

Thermodynamics of Ultracold Fermions in Traps

The ability to tune the strength of the attractive interaction in trapped Fermi gases is revealing the nature of superfluidity (and superconductivity) in a hitherto unexplored regime. Within the last few years we have witnessed the discovery of strongly interacting Fermi gases; over the last year we have found strong evidence for their superfluidity. These interacting gases appear at intermedia...

Optical traps for Ultracold Metastable Helium atoms

Introduction Research on ultra-cold atoms is a very rich area of investigation, where different fields of basic research merge, such as atomic, condensed-matter and many-body physics. The first realisation of a Bose-Einstein condensate (BEC) has been observed almost simusta-neously in 1995 by three groups working with different alkali atoms (Rb [1],Na [2],Li [3]). Before, BECs have usually been...