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          Institute: MPI für Dynamik und Selbstorganisation     Collection: Hydrodynamik und Strukturbildung     Display Documents

ID: 307677.0, MPI für Dynamik und Selbstorganisation / Hydrodynamik und Strukturbildung
Reaction paths and elementary bifurcations tracks: The diabatic 1B2-state of ozone
Authors:Farantos, S. C.; Qu, Z.-W.; Zhu, H.; Schinke, R.
Date of Publication (YYYY-MM-DD):2006-07
Title of Journal:International Journal of Bifurcation and Chaos
Issue / Number:7
Start Page:1913
End Page:1928
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Bifurcations of equilibrium points and periodic orbits are common in nonlinear dynamical systems when some parameters change. The vibrational motions of a molecule are nonlinear, and the bifurcation phenomena are seen in spectroscopy and chemical reactions. Bifurcations may lead to energy localization in specific bonds, and thus, they have important consequences for elementary chemical reactions, such as isomerization and dissociation/association. In this article we investigate how elementary bifurcations, such as saddle-node and pitchfork bifurcations, appear in small molecules and show their manifestations in the quantum mechanical frequencies and in the topology of wave functions. We present the results of classical and quantum mechanical calculations on a new (diabatic) potential energy surface of ozone for the 1B2 state. This excited electronic state of ozone is pertinent for the absorption of the harmful UV radiation from the sun. We demonstrate that regular localized overtone states, which extend from the bottom of the well up to the dissociation or isomerization barrier, are associated with families of periodic orbits emanated from elementary bifurcations.
Free Keywords:bifurcation theory; periodic orbits; classical and quantum molecular dynamics
External Publication Status:published
Document Type:Article
Communicated by:Folkert Müller-Hoissen
Affiliations:MPI für Dynamik und Selbstorganisation/Hydrodynamik und Strukturbildung
External Affiliations:Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas and Department of Chemistry, University of Crete, Iraklion 71110, Crete, Greece
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