Path integral ground state with a fourth-order propagator: application to condensed helium.

Ground state properties of condensed helium are calculated using the path integral ground state (PIGS) method. A fourth-order approximation is used as short (imaginary) time propagator. We compare our results with those obtained with other quantum Monte Carlo (QMC) techniques and different propagators. For this particular application, we find that the fourth-order propagator performs comparably to the pair product approximation, and is far superior to the primitive approximation. Results obtained for the equation of state of condensed helium show that PIGS compares favorably to other QMC methods traditionally utilized for this type of calculation.

• Publication year

  2004

• Venue

  Journal of Chemical Physics

• Publication date

  2004-12-27

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1063/1.1872775arXiv cond-mat/0412707PMID 15836226
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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