Quantum phases of a vortex string.
Quantum phases of a vortex string.
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涡弦的量子相位。
DOI：
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发表时间：
2009
影响因子：
8.6
通讯作者：
S. P. Kumar
中科院分区：
文献类型：
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作者：
R. Auzzi;S. P. Kumar
我们认为，质量形变N=4理论的Higgs相中磁性k弦的世界薄层动力学由具有各向异性的玻色子O(3)sigma模型和拓扑角速度项控制。该理论在无质量O(2)对称区域、大质量O(3)对称相和另一个自发破坏Z(2)对称性的大质量相之间进行插补。前两个相由Kosterlitz-Thouless转变分开。当theta=pi时，O(3)对称相流到一个相互作用的不动点；sigma模型扭结和它们的双声子伙伴简并，反映了母规范理论中单极的行为。这导致了单极子被限制在弦上的扭结的识别。
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 theta = pi, the O(3) symmetric phase flows to an interacting fixed point; sigma model kinks and their dyonic partners become degenerate, mirroring the behavior of monopoles in the parent gauge theory. This leads to the identification of the kinks with monopoles confined on the string.