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Molecular Symmetry, Group Theory and Applications (57P)
This note provides a systematic treatment of symmetry in chemical systems within the mathematical framework known as group theory. Topics covered includes: Symmetry operations and symmetry elements, Symmetry classification of molecules – point groups, Symmetry and physical properties, Combining symmetry operations: group multiplication, Constructing higher groups from simpler groups, Mathematical definition of a group, Transformation matrices, Matrix representations of groups, Properties of matrix representations, Reduction of representations, Irreducible representations and symmetry species, Bonding in diatomics, Bonding in polyatomics, Molecular vibrations, Group theory and molecular electronic states.
Author(s): Claire Vallance
57 Pages 
This note explains the following topics:The Interaction between two Molecules, Interaction of Macroscopic Bodies, The Effective Interaction between two Molecules, Electrostatic Forces.
Author(s): Gunnar Karlstrom and Bo Jonsson
70 Pages
Introduction To The Physics of Atoms, Molecules and Photons
These lecture notes have been prepared to give an introduction into the foundations of atomic and molecular physics with an emphasis on the interaction of these atomic systems with light, and in more general, with electromagnetic fields. Topics covered includes: Wave-corpuscular duality of photons and massive particles, Angular momentum in quantum mechanics, Atomic spectra, simple models of atoms, Spin and the fine structure, Many-body problems, systems of identical particles, Molecular structure and spectra, Bose Einstein Condensation, Elements of coherent atom field interactions, Atoms in Strong Fields, Photons, A quantum paradox and the experiments.
Author(s): Mihaly Benedict
142 Pages