Degeneracy double

First, the starting point for the discussion is that the real smoothly varying electronic eigenstates x Q)) close to a double degeneracy, Qo, are found to change sign around any path in a nuclear coordinate plane, Q, containing the... 

Since it is the d- electrons that are responsible for the formation of mtiferromagnetic order in Cr, it would be reasonable to take into account in expression (10) only the energy bands with addition of 3d—electrons. In view of double degeneracy, the number of such bmds amounts to 12J r. This magnitude will determine the minimum number of basis functions to be allowed for in expansion (10). 

The coupling of vibrational and electronic motions in degenerate electronic states of inorganic complexes, part 1 state of double degeneracy. A. D. Liehr, Prog. Inorg. Chem., 1962, 3, 281-314 (25). 

DMBE III calculation, permutational symmetry, dynamic Jahn-Teller and geometric phase effects, 699—711 Double degeneracy, geometric phase theory, Jahn-Teller models, 2-4, 31-33 Dynamic phase, properties, 210... 

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