Abstract
Degenerate perturbation theory, without geometrical tools, directly yields vector potentials in the Born-Oppenheimer approximation. The derivation uses only the algebra of the dynamical operators, and the slow variables need not commute.
Original language | English |
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Pages (from-to) | 3065-3067 |
Number of pages | 3 |
Journal | Physical Review Letters |
Volume | 65 |
Issue number | 25 |
DOIs | |
State | Published - 1990 |