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Published online by Cambridge University Press: 09 January 2025
Chapter 3 is devoted to fractionalization in polyacetylene. Topological defects (solitons) in the dimerization of polyacetylene are introduced and shown to bind electronic zero modes. The fractional charge of these zero modes is calculated by different means: (1) The Schrieffer counting formula(2) Scattering theory(3) Supersymmetry(4) Gradient expansion of the current(5) Bosonization.
The effects of temperature on the fractional charge and the robustness of the zero modes to interactions in polyacetylene are studied.
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