聚乙炔中量子孤子的电导消失
Vanishing conductivity of quantum solitons in polyacetylene
摘要：
量子孤子或极化子被认为在聚乙炔的导电性中起着至关重要的作用，在中间掺杂制度。本文对聚乙炔中的量子孤子电导率进行了全量子化的精确计算，并证明了它完全为零。这是通过将基于有序-无序对偶性的孤子量子化的一般方法应用于TLM二聚化有效场论的Z（2）对称复扩展而得到的。结果表明，在该理论中，聚乙炔孤子在复场的相位中是正弦-戈登孤子。
英文摘要：
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 theory, polyacetylene solitons are sine-Gordon solitons in the phase of the complex field.
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