Related Experiment Videos
In- and outbound spreading of a free-particle s-wave
I Białynicki-Birula1, M A Cirone, J P Dahl
1Center for Theoretical Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668, Warsaw, Poland.
Physical Review Letters
|August 23, 2002
Abstract:
We show that a free quantum particle in two dimensions with zero angular momentum (s wave) in the form of a ring-shaped wave packet feels an attraction towards the center of the ring, leading first to a contraction followed by an expansion. An experiment to demonstrate this effect is also outlined.