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Multilayer formulation of the multiconfiguration time-dependent Hartree theory

Wang, Haobin, Thoss, Michael·2003·The Journal of Chemical Physics

Abstract

A multilayer (ML) formulation of the multiconfiguration time-dependent Hartree (MCTDH) theory is presented. In this new approach, the single-particle (SP) functions in the original MCTDH method are further expressed employing a time-dependent multiconfigurational expansion. The Dirac–Frenkel variational principle is then applied to optimally determine the equations of motion. Following this strategy, the SP groups are built in several layers, where each top layer SP can contain many more Cartesian degrees of freedom than in the previous formulation of the MCTDH method. As a result, the ML-MCTDH method has the capability of treating substantially more physical degrees of freedom than the original MCTDH method, and thus significantly enhances the ability of carrying out quantum dynamical simulations for complex molecular systems. The efficiency of the new formulation is demonstrated by converged quantum dynamical simulations for systems with a few hundred to a thousand degrees of freedom.

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Metadata

Authors
Wang, H., & Thoss, M.
Venue
The Journal of Chemical Physics
Published
2003-07-15
Volume
119
Issue
3
Pages
1289-1299
ISSN
  • 0021-9606 (ISSN-L)
  • 1089-7690
OpenAlex
W2008931657
Cited by
932
References
55
FWCI
6.54
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Multilayer formulation of the multiconfiguration time-dependent Hartree theory. https://app.cochat.ai/papers/10.1063/1.1580111
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Wang, H., & Thoss, M. (2003). Multilayer formulation of the multiconfiguration time-dependent Hartree theory. The Journal of Chemical Physics. https://doi.org/10.1063/1.1580111

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