Theory of optical absorption in<i>trans</i>-polyacetylene containing solitons

We present a theoretical study of the effects of $M$ widely separated solitons on the optical-absorption spectra of trans-polyacetylene ${(\mathrm{CH})}_{x}$. We show that the interband optical absorption is the same as with no solitons present minus a small correction proportional to the soliton density. We also consider the resonant Raman scattering in the presence of solitons.

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