The finite-temperature Monte Carlo method and its application to superfluid helium clusters

Details The finite-temperature Monte Carlo method and its application to superfluid helium clusters The finite-temperature Monte Carlo method and its application to superfluid helium clusters

2002-04-30

arxiv.org/abs/physics/0204089v1

Physics

Chemical Physics

P. Huang, Y. Kwon, and K. B. Whaley, in "Quantum Fluids in Confinement", Vol. 4 of "Advances in Quantum Many-Body Theories", e

Scientific paper

We review the use of the path integral Monte Carlo (PIMC) methodology to the study of finite-size quantum clusters, with particular emphasis on recent applications to pure and impurity-doped He clusters. We describe the principles of PIMC, the use of the multilevel Metropolis method for sampling particle permutations, and the methods used to accurately incorporate anisotropic molecule-helium interactions into the path integral scheme. Applications to spectroscopic studies of embedded atoms and molecules are summarized, with discussion of the new concepts of local and nanoscale superfluidity that have been generated by recent PIMC studies of the impurity-doped He clusters.

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