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arXiv 0903.0593hep-th
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大质量非线性S^2-西格玛模型中的BPS和非BPS扭结

BPS and non-BPS kinks in a massive non-linear S^2-sigma model

A. Alonso Izquierdo, M. A. Gonzalez Leon, J. Mateos Guilarte

摘要:

非线性${\mathbb S}^2$ -西格玛模型的扭结的稳定性发现在物理。101(2008)131602从几个角度进行了讨论。在直接估计了拓扑扭结周围的二阶涨落算符的谱之后,提出了区分BPS和非BPS扭结的一阶场方程。由拓扑扭结周围的量子涨落引起的单圈质量移动使用在Phys. Lett中提出的Cahill-Comtet-Glauber公式计算。第64 B(1976年)283页。通过Morse指数定理揭示了非拓扑扭结的稳定性。这些扭结被确定为非BPS状态和不稳定性和超对称性之间的相互作用进行了探讨。

英文摘要:

The stability of the kinks of the non-linear ${\mathbb S}^2$-sigma model discovered in Phys. Rev. Lett. 101(2008)131602 is discussed from several points of view. After a direct estimation of the spectra of the second-order fluctuation operators around topological kinks, first-order field equations are proposed to distinguish between BPS and non-BPS kinks. The one-loop mass shifts caused by quantum fluctuations around the topological kinks are computed using the Cahill-Comtet-Glauber formula proposed in Phys. Lett. 64B(1976)283. The (lack of) stability of the non-topological kinks is unveiled by application of the Morse index theorem. These kinks are identified as non-BPS states and the interplay between instability and supersymmetry is explored.

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。

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