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A time-dependent Landau theory is proposed for the transition-metal dichalcogenides coupling the motion of the charge-density waves to the electron liquid. The dissipative terms are related to the metallic resistance. The "phason" or "phonon" excitations of the charge-density wave are found to be overdamped. Resistive anomalies are predicted in the normal state.
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W. L. McMillan (1975) studied this question.
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