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arXiv · 1309.1893

Unified view on linear response of interacting identical and distinguishable particles from multiconfigurational time-dependent Hartree methods

Ofir E. Alon·Alexej I. Streltsov·Lorenz S. Cederbaum
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Abstract

A unified view on linear response of interacting systems utilizing multicongurational time-dependent Hartree methods is presented. The cases of one-particle and two-particle response operators for identical particles and up to all-system response operators for distinguishable degrees-of-freedom are considered. The working equations for systems of identical bosons (LR-MCTDHB) and identical fermions (LR-MCTDHF), as well for systems of distinguishable particles (LR-MCTDH) are explicitly derived. These linear-response theories provide numerically-exact excitation energies and system's properties, when numerical convergence is achieved in the calculations.

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Ofir E. Alon, Alexej I. Streltsov, Lorenz S. Cederbaum. 2013-09-07. Unified view on linear response of interacting identical and distinguishable particles from multiconfigurational time-dependent Hartree methods. https://doi.org/10.1063/1.4860970

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