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Variational calculation of vibrational linear and nonlinear optical properties
Torrent Sucarrat, Miquel; Luis Luis, Josep Maria; Kirtman, Bernard
A variational approach for reliably calculating vibrational linear and nonlinear optical properties of molecules with large electrical and/or mechanical anharmonicity is introduced. This approach utilizes a self-consistent solution of the vibrational Schrödinger equation for the complete field-dependent potential-energy surface and, then, adds higher-level vibrational correlation corrections as desired. An initial application is made to static properties for three molecules of widely varying anharmonicity using the lowest-level vibrational correlation treatment (i.e., vibrational Møller-Plesset perturbation theory). Our results indicate when the conventional Bishop-Kirtman perturbation method can be expected to break down and when high-level vibrational correlation methods are likely to be required. Future improvements and extensions are discussed
2011-03-22
Perturbation (Mathematics)
Anàlisi harmònica
Aproximació, Teoria de l'
Càlcul de variacions
Dinàmica molecular
Holografia
Models lineals (Estadística)
Pertorbació (Matemàtica)
Polarització (Electricitat)
Approximation theory
Calculus of variations
Harmonic analysis
Holography
Linear models (Statistics)
Molecular dynamics
Polarization (Electricity)
Tots els drets reservats
Article
American Institute of Physics
         

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