Abstract
Using the symmetry group chain methods, the construction of rigorous algebraic models for the description of coupled stationary states of rigid and nonrigid molecules in a uniform constant external electric field is considered. The description of the Stark effect is obtained as a distortion of the description of stationary states of an isolated molecule as a result of the lowering the symmetry of the problem in the presence of the electric field.
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Original Russian Text © A.V. Burenin, 2008, published in Optika i Spektroskopiya, 2008, Vol. 105, No. 6, pp. 885–891.