Cai Mei-chun, Pan Jun-ting, Zhang Hong
Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Jul;86(1 Pt 2):016208. doi: 10.1103/PhysRevE.86.016208. Epub 2012 Jul 10.
We present numerical evidence that, in the presence of a suitable electric field, an isolated broken plane wave retracting originally in subexcitable media can propagate continuously and eventually evolve into a rotating spiral. Simulations for the FitzHugh-Nagumo, the Barkley, and the Oregonator models are carried out and the same electric-field-sustained spiral phenomena are observed. Semianalytical results in the framework of a kinematic theory are quantitatively consistent with the numerical results.
我们给出了数值证据，即在合适的电场存在下，原本在亚兴奋介质中收缩的孤立破碎平面波可以持续传播，并最终演变成旋转螺旋波。对FitzHugh-Nagumo模型、Barkley模型和Oregonator模型进行了模拟，并观察到了相同的电场维持螺旋波现象。运动学理论框架下的半解析结果与数值结果在定量上是一致的。
