Wigner Crystallization in systems of variable interaction strength

Mikael Davidsson

Monday, 8 March 2010, 13:30
Matfys library

A small quantum system of Coulomb interacting particles trapped in a two dimensional harmonic oscillator potential is studied using exact diagonalization. By increasing the particle-particle interaction strength a Wigner Crystal is formed both in the case of trapped fermions and trapped bosons. The boson and fermion systems become increasingly similar to each other and also to a system of classical particles as the interaction strength increases. In the case of a rotating system we find meta-stable states forming at certain interaction strengths.