论文标题
超导字符串和沃顿的量子电流耗散
Quantum current dissipation in superconducting strings and vortons
论文作者
论文摘要
在这项工作中，讨论了具有骨值超导性的宇宙弦的当前稳定性。弦的非变化曲率通常会诱导携带电流粒子的量子不稳定性。探索了各种类型的模型参数，弯曲的弦线和衰减过程的衰减率。作为一种宇宙学应用，通过评估其宇宙学的进化，检查了字符串网络中的超导字符串以及宇宙Vorton的稳定性。因此，零模式和Vorton在各种情况下都不能保持稳定，例如，在弦上携带电流的粒子质量和弦乐张力之间的层次结构，或与当前携带粒子到光种类（如标准模型颗粒）的相当耦合。
In this work, the current stability is discussed for cosmic strings with the bosonic superconductivity. A non-vanishing curvature of string generally induce the quantum instability of the current-carrying particle. Its decay rates are explored for various types of model parameters, curved string shapes, and decay processes. As a cosmological application, the stability is examined for superconducting strings in the string network and also for cosmic vortons by evaluating their cosmological evolution. The zero mode and hence the vorton cannot be stable in various cases, e.g., with a hierarchy between the current-carrying particle mass off the string and the string tension or with sizable couplings of the current-carrying particle to light species such as the Standard Model particles.
