Anomalous asymmetry splittings in a molecule with internal rotation in the presence of classical chaos

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1996 English Publisher:American Physical Society (APS)Journal:Physical Review A, volume 54, pages R2521-R2524 (issn: 1050-2947, eissn: 1094-1622,

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Authors: Ortigoso, Juan;

doi: 10.1103/physreva.54.r2521

pmid: 9913907

handle: 10261/139649

Anomalous asymmetry splittings in a molecule with internal rotation in the presence of classical chaos

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Abstract

Rotation-torsion energy levels of acetaldehyde calculated from a spectroscopic Hamiltonian obtained from the fit of high-resolution microwave and far-infrared spectra, exhibit anomalously large splittings for some asymmetry doublets. It is shown that these anomalies are caused by chaos- enhanced quantum dynamical tunneling between classically disconnected regions of the phase space. A major consequence of this phenomenon is the magnification of intramolecular energy-transfer processes. ©1996 American Physical Society

This work was supported in part by the Division of Chemical Sciences, Office of Basic Energy Sciences, Office of Energy Research, U.S. Department of Energy, and by the Spanish DGICYT ~Research Project No. PB93-0138!.

4 págs.; 3 figs.; PACS number~s!: 03.65.2w, 05.45.1b, 34.50.Ez; Rapid Communications

Peer Reviewed

Related Organizations

Institute for the Structure of Matter
Spain
Spanish National Research Council
Spain

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