The Role of Degenerate States in Chemistry, Volume 124

Michael Baer is Professor in the Applied Physics Division at Soreq NRC in Israel. Gert D. Billing is Professor in the Department of Chemistry at the University of Copenhagen.

Early Perspectives on Geometric Phase (M. S. Child).

The Electronic Non-Adiabatic Coupling Term in Molecular Systems: A Theoretical Approach (By Michael Baer).

Non-Adiabatic Effects in Chemical Reactions: Extended Born-Oppenheimer Equations and Its Applications (Satrajit Adhikari and Gert Due Billing).

Complex States of Simple Molecular Systems (R. Englman and A. Yahalom).

Quantum Reaction Dynamics for Multiple Electronic States (Aron Kuppermann and Ravinder Abrol).

Electron Nuclear Dynamics (Yngve Öhrn and Erik Deumens).

Applying Direct Molecular Dynamics to Non-Adiabatic Systems (G. A. Worth and M. A. Robb).

Conical Intersections in Molecular Photochemistry: The Phase-Change Approach (Yehuda Haas and Shmuel Zilberg).

The Crude Born-Oppenheimer Adiabatic Approximation of Molecular Potential Energies (K. K. Liang, J. C. Jiang, V. V. Kislov, A. M. Mebel, and S. H. Lin).

Conical Intersections and the Spin-Orbit Interaction (Spiridoula Matsika and David R. Yarkony).

Renner-Teller Effect and Spin-Orbit Coupling in Triatomic and Tetraatomic Molecules (Miljenko Peric and Sigrid D. Peyerimhoff).

Permutational Symmetry and the Role of Nuclear Spin in the Vibrational Spectra of Molecules in Doubly Degenerate Electronic States: The Trimers of 2S Atoms (J. C. Varandas and Z. R. Xu).

Author Index.

Subject Index.