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- Title
An effect of extra compactified dimensions of space in the molecule NO2.
- Authors
Weber, Hans-Georg
- Abstract
The theory of large extra compactified dimensions of space (ADD-model) predicts that gravity may become strong in a compactification space of the size of a molecule and may affect the vibrational motion of a molecule. In triatomic molecules like NO 2 nuclear dynamics is strongly coupled to electronic dynamics at the intersection of electronic states (conical intersection). We discuss experimental results on NO 2 which reveal that the collision-free molecule optically excited into a symmetric stretch vibration mode of an electronic state with conical intersection undergoes an irreversible non-radiative transition into an asymmetric stretch vibration mode in combination with a change of the electronic state. We suggest ascribing this irreversible non-radiative transition to a gravitational perturbation on the vibrational motion in NO 2 . This gravitational perturbation deactivates the upper state of the optical transition. The width of the absorption line is given by the characteristic time of the gravitational perturbation and not by the radiative lifetime of the excited molecular state.
- Subjects
RADIATIONLESS transitions; MOLECULAR size; MOLECULES; EXCITED states; COLLISION broadening; VIBRATIONAL spectra
- Publication
European Physical Journal D (EPJ D), 2021, Vol 75, Issue 12, p1
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/s10053-021-00315-0