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Finite element investigation of the ground states of the helium trimers 4He3 and 4He2–3He |
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| Authors: | Moses Salci Evgeny Yarevsky Sergey B Levin Nils Elander |
| Institution: | 1. Department of Physics, Stockholm University, AlbaNova University Center, SE‐106 91 Stockholm, Sweden;2. Department of Mathematical and Computational Physics, St. Petersburg State University, 198 504 St. Petersburg, Russia;3. Department of Physics, Stockholm University, AlbaNova University Center, SE‐106 91 Stockholm, SwedenDepartment of Physics, Stockholm University, AlbaNova University Center, SE‐106 91 Stockholm, Sweden |
| Abstract: | A three‐dimensional finite element method is applied to the ground states of the symmetric and asymmetric atomic helium trimers 4He3 and 4He2–3He. Three different He–He interaction potentials of hard‐core nature were studied. Two extrapolation procedures based on the convergence properties of the finite element method are investigated. © 2006 Wiley Periodicals, Inc. Int J Quantum Chem, 2007 |
| Keywords: | triatomic molecule halo molecule finite element few‐body system |