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Linear response functions for a vibrational configuration interaction state

Linear response functions are implemented for a vibrational configuration interaction state allowing accurate analytical calculations of pure vibrational contributions to dynamical polarizabilities. Sample calculations are presented for the pure vibrational contributions to the polarizabilities of water and formaldehyde. We discuss the convergence of the results with respect to various details of the vibrational wave function description as well as the potential and property surfaces. We also analyze the frequency dependence of the linear response function and the effect of accounting phenomenologically for the finite lifetime of the excited vibrational states. Finally, we compare the analytical response approach to a sum-over-states approach

American Institute of Physics

Autor: Christiansen, Ove
Kongsted, Jacob
Paterson, Martin J.
Luis Luis, Josep Maria
Resum: Linear response functions are implemented for a vibrational configuration interaction state allowing accurate analytical calculations of pure vibrational contributions to dynamical polarizabilities. Sample calculations are presented for the pure vibrational contributions to the polarizabilities of water and formaldehyde. We discuss the convergence of the results with respect to various details of the vibrational wave function description as well as the potential and property surfaces. We also analyze the frequency dependence of the linear response function and the effect of accounting phenomenologically for the finite lifetime of the excited vibrational states. Finally, we compare the analytical response approach to a sum-over-states approach
Accés al document: http://hdl.handle.net/2072/101677
Llenguatge: eng
Editor: American Institute of Physics
Drets: Tots els drets reservats
Matèria: Anàlisi numèrica
Convergència (Matemàtica)
Funcions
Dinàmica molecular
Models lineals (Estadística)
Polarització (Física nuclear)
Convergence
Functions
Linear models (Statistics)
Molecular dynamics
Numerical analysis
Polarization (Nuclear physics)
Títol: Linear response functions for a vibrational configuration interaction state
Tipus: info:eu-repo/semantics/article
Repositori: Recercat

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