Quantum Monte Carlo Study of Zero -Point Effects in Different Systems
Khairallah, Saad Antoun
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Permalink
https://hdl.handle.net/2142/80545
Description
Title
Quantum Monte Carlo Study of Zero -Point Effects in Different Systems
Author(s)
Khairallah, Saad Antoun
Issue Date
2007
Doctoral Committee Chair(s)
Ceperley, David M.
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Condensed Matter
Language
eng
Abstract
Finally, we report simulations on small pH2 droplets at low temperatures. We reconcile two intriguing observations whereby the clusters appear to be superfluid and yet show evidence for solid-like order. We find magic cluster sizes that exhibit a more rigid structure, due to inherent solid-like order. Other non-magic sizes quantum melt and become superfluid easily. Superfluidity is localized on the surface of large clusters, while solid-like order prevails at the core.
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