Vorton existence and stability.
Vorton existence and stability.
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沃顿存在且稳定。
DOI：
10.1103/physrevlett.91.141601
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发表时间：
2003
影响因子：
8.6
通讯作者：
E. Shellard
中科院分区：
文献类型：
--
作者：
Y. Lempérière;E. Shellard
我们提出了第一个具体的证据，证明了涡旋的经典稳定性，即被困在弦上的电荷和电流的角动量稳定的圆形宇宙弦环。我们首先总结已知的涡解，特别是它们在一系列径向和非径向扰动下的解析稳定性。然后讨论了在全三维场理论中，即Witten原始的带修正势项的玻色子超导弦模型中涡顿模拟的数值结果。对于特定的参数值，这些模拟证明了用椭圆初始ansatz创建的足够大的涡解的长期稳定性。
We present the first concrete evidence for the classical stability of vortons, circular cosmic string loops stabilized by the angular momentum of the charge and current trapped on the string. We begin by summarizing what is known about vorton solutions and, in particular, their analytic stability with respect to a range of radial and nonradial perturbations. We then discuss numerical results of vorton simulations in a full 3D field theory, that is, Witten's original bosonic superconducting string model with a modified potential term. For specific parameter values, these simulations demonstrate the long-term stability of sufficiently large vorton solutions created with an elliptical initial ansatz.