Group Theory in Quantum Mechanics impurity states

impurity states

Problems designed to further develop the text material are given throughout and some of these contain statements of new results

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technical explanations

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Group Theory in Quantum Mechanics impurity statesGeared toward research students in physics and chemistry, this text introduces the three main uses of group theory in quantum mechanics: (1) to label energy levels and the corresponding eigenstates; (2) to discuss qualitatively the splitting of energy levels, starting from an approximate Hamiltonian and adding correction terms; and (3) to aid in the evaluation of matrix elements of all kinds. "The theme," states author Volker Heine, "is to show how