Microscopic calculation of the phonon-roton branch in superfluid $^4$He

Details Microscopic calculation of the phonon-roton branch in superfluid $^4$He Microscopic calculation of the phonon-roton branch in superfluid $^4$He

1996-07-29

arxiv.org/abs/cond-mat/9607206v1

Physics

Condensed Matter

12 pages, RevTex, 3 ps figures included

Scientific paper

10.1209/epl/i1997-00240-x

Diffusion Monte Carlo results for the phonon-roton excitation branch in bulk liquid $^4$He at zero temperature are presented. The sign problem associated to the excited wave function has been dealt both with the fixed-node approximation and the released-node technique. The upper bounds provided by the fixed-node approximation are shown to become exact when using the released-node method. An excellent agreement with experimental data is achieved both at the equilibrium and near the freezing densities.

Affiliated with

Also associated with

No associations

Rating

Microscopic calculation of the phonon-roton branch in superfluid $^4$He does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Microscopic calculation of the phonon-roton branch in superfluid $^4$He, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microscopic calculation of the phonon-roton branch in superfluid $^4$He will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-446464