The Moduli space of BPS domain walls
The Moduli space of BPS domain walls
复制标题
BPS域壁的模空间
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
D. Tong
中科院分区：
文献类型：
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作者：
D. Tong
N=2 SQED与几个口味承认多个，静态BPS畴壁解决方案。我们确定明确的两个扭结度量和检查碰撞畴壁的动力学。多扭结度规具有复曲面的Kahler结构，我们将Kahler势简化为求积势。在本文的第二部分中，我们考虑了圆上紧化的半局部涡。我们认为，在一个合适的威尔逊线的存在下，涡分离成域壁成分。它们在二维规范理论和σ模型中扮演分数瞬子的角色。
N=2 SQED with several flavors admits multiple, static BPS domain wall solutions. We determine the explicit two-kink metric and examine the dynamics of colliding domain walls. The multi-kink metric has a toric Kahler structure and we reduce the Kahler potential to quadrature. In the second part of this paper, we consider semi-local vortices compactified on circle. We argue that, in the presence of a suitable Wilson line, the vortices separate into domain wall constituents. These play the role of fractional instantons in two-dimensional gauge theories and sigma-models.