Abstract
We demonstrate the Monte Carlo calculation of multidimensional tunnel splittings in the water trimer without the use of explicit nodal approximations. The calculations are made for the three-dimensional torsional model of the nonbonded hydrogen atom motions. We employ the projection operator imaginary time spectral evolution (POITSE) method, which requires specification of a set of projector operators. The permutation symmetry leading to exchange tunneling is incorporated into these projectors directly. We analyze the optimal choice of the real space vibrational coordinates with a comparative study of local vs nonlocal symmetry-adapted nuclear coordinates. Extraction of the lowest four sets of tunneling states yields good agreement with available discrete variable representation calculations.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:38 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 6, 2024, 5:18 p.m.) |
Indexed | 1 month, 2 weeks ago (July 16, 2025, 8:59 a.m.) |
Issued | 25 years, 7 months ago (Feb. 1, 2000) |
Published | 25 years, 7 months ago (Feb. 1, 2000) |
Published Print | 25 years, 7 months ago (Feb. 1, 2000) |
@article{Blume_2000, title={Tunneling splittings in water trimer by projector Monte Carlo}, volume={112}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.480788}, DOI={10.1063/1.480788}, number={5}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Blume, D. and Whaley, K. B.}, year={2000}, month=feb, pages={2218–2226} }