Dynamical conductivity of a quasi-one-dimensional electron gas

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Abstract
The dynamical conductivity of a quasi-one-dimensional electron gas interacting with phonons is calculated in the long-wavelength limit by use of the memory-function formalism. The frequency and electron-density dependence of the conductivity are investigated. It is found that the oscillatory structure in the conductivity, which arises from the electron intersubband transitions, will be weakened or even smeared out as the electron density increases.