Berkeley Lab - Scientific Computing Seminar

Date:

Thursday, April 24, 2008

Time:

11:15am-12:15pm

Location:

Building 50F, 1647 Conference Room

Seminar Speaker:

Saad Khairallah
University of Illinois - Urbana-Champaign

Title:

Theory of Small Para-Hydrogen Clusters: Magic Numbers and Superfuid Sizes

Abstract:

We apply the Path Integral Monte Carlo (PIMC) method to study the low temperature structures and superfluidity of para-hydrogen clusters with up to 40 molecules. We find an enhanced stability at certain "magic" cluster sizes and sharp jumps in superfuidity for different cluster sizes (N > 26). Superfuidity is largely localized on the surface and coexists with clusters with solid-like core. In addition to the simulation results, we present a self-contained description of the computational and mathematical aspects of the work.

Sponsor of Seminar:

Lin-Wang Wang

Scientific Computing

Contact Esmond G. Ng EGNg@lbl.gov