A continuum model of kp-type for the approximate calculation of the characteristics of electromagnetic waves propagating in an almost circular (azimuthally symmetric), closely packed bundle of parallel, identical, and metal carbon nanotubes (CNTs) yields results in reasonably good agreement with the equivalent-multishell approach and with a many-body technique, for infinitely long bundles when the number of CNTs is moderately high. The slow-wave coefficients for azimuthally symmetric guided waves increase with the number of metallic CNTs in the bundle, tending for these bundles to unity, which is characteristic of macroscopic metallic wires. The existence of an azimuthally asymmetric guided wave at low frequencies in a bundle of a large number of finite-length CNTs stands in contrast to the characteristics of guided-wave propagation in a single CNT. A continuum model of kp-type yields the polarizability scalar and the antenna efficiency of a bundle of finite-length CNTs in the long-wavelength regime over a wide frequency range spanning the terahertz and the near-infrared regimes. Edge effects give rise to geometric resonances in such bundles.

一个kp型连续模型，用于近似计算在几乎圆形（方位角对称），紧密堆积的平行，相同和金属碳纳米管（CNT）束中传播的电磁波的特性，得出的结果与k当碳管数量适中时，对于无限长的束，采用等效多壳方法和多体技术。方位对称导波的慢波系数随线束中金属CNT的数量增加而增加，使这些线束趋于统一，这是宏观金属线的特征。与单个CNT中的导波传播特性相反，大量有限长度的CNT束中存在低频的方位角非对称导波。kp型连续模型在跨越太赫兹和近红外范围的宽频率范围内，在长波长范围内产生一束有限长度的CNT的极化率标量和天线效率。边缘效应在这种束中引起几何共振。