arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.4278hep-thhep-lat
收藏

涡旋弦的量子相位

Quantum Phases of a Vortex String

Roberto Auzzi, S. Prem Kumar

摘要:

我们认为,在质量形变N=4理论的Higgs相中,磁k弦的世界片动力学是由具有各向异性和拓扑theta项的玻色子O(3)西格玛模型控制的.该理论在无质量O(2)对称区、有质量O(3)对称区和另一个自发破缺的Z_2对称性的有质量相之间插值。前两个相被Kosterlitz-无相变分离。当θ= π时,O(3)对称相流到一个相互作用的固定点;西格玛模型的扭结和它们的双子伙伴变得简并,反映了母体规范理论中单极子的行为。这导致识别的扭结与单极限制在字符串上。

英文摘要:

We argue that the world-sheet dynamics of magnetic k-strings in the Higgs phase of the mass-deformed N=4 theory, is controlled by a bosonic O(3) sigma model with anisotropy and a topological theta term. The theory interpolates between a massless O(2) symmetric regime, a massive O(3) symmetric phase and another massive phase with a spontaneously broken Z_2 symmetry. The first two phases are separated by a Kosterlitz-Thouless transition. When θ= πthe O(3) symmetric phase flows to an interacting fixed point; sigma model kinks and their dyonic partners become degenerate, mirroring the behaviour of monopoles in the parent gauge theory. This leads to the identification of the kinks with monopoles confined on the string.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑