Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 12: Ultra-cold atoms, ions and BEC (with A)
Q 12.42: Poster
Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof
Variational calculation of 4He droplets — •Christopher Bate, Yaroslav Lutsyshyn, and Dieter Bauer — Institut für Physik, Universität Rostock, 18051 Rostock
We aim to study droplets of liquid 4He at very low temperature with the variational ansatz that was recently proposed for the ground state of strongly correlated Bose liquids [1]. This ansatz goes beyond the traditional Jastrow-Feenberg functional form and, when optimized, provides an excellent description of the correlations in the system. Even though this wavefunction is constructed of short-range two-body factors and does not contain one-body surface terms, phase separation emerges and a free surface is formed at appropriate densities. This allows to study the inhomogeneous phases such as the droplets of superfluid helium, and the formation of the inhomogeneous phase as well. Due to advances in computational techniques and the fact that we can study the system on a variational level, we are able to consider droplets with up to 104 particles.