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Linear response functions for a vibrational configuration interaction state
Christiansen, Ove; Kongsted, Jacob; Paterson, Martin J.; Luis Luis, Josep Maria
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
15-02-2011
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)
Tots els drets reservats
Artículo
American Institute of Physics
         

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