Vanishing conductivity of quantum solitons in polyacetylene

Leonardo Mondaini, E C Marino, A A Schmidt
2009 Journal of Physics A: Mathematical and Theoretical  
Quantum solitons or polarons are supposed to play a crucial role in the electric conductivity of polyacetylene, in the intermediate doping regime. We present an exact fully quantized calculation of the quantum soliton conductivity in polyacetylene and show that it vanishes exactly. This is obtained by applying a general method of soliton quantization, based on order-disorder duality, to a Z(2)-symmetric complex extension of the TLM dimerization effective field theory. We show that, in this
more » ... that, in this theory, polyacetylene solitons are sine-Gordon solitons in the phase of the complex field.
doi:10.1088/1751-8113/42/5/055401 fatcat:kykd4vhqxjdsjoibeunllsealq