arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.2546hep-th
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广义Fubini瞬子

Generalized Fubini instantons

A. A. Yurova, A. V. Yurov

摘要:

证明了具有负耦合的$(1+2)$非线性Klein-Gordon方程存在一个精确解,该解是平面波与非奇异有理孤子的线性叠加.我们表明,同样的方法可以构造的解决方案的欧几里得$ϕ^4$模型与对称性破缺的类似性质。有趣的是,这个正则解只在$D\le 5$欧几里德空间中是瞬子型的。

英文摘要:

We show that $(1+2)$ nonlinear Klein-Gordon equation with negative coupling admits an exact solution which appears to be the linear superposition of the plane wave and the nonsingular rational soliton. We show that the same approach allows to construct the solution of similar properties for the Euclidean $ϕ^4$ model with broken symmetry. Interestingly, this regular solution will be of instanton type only in the $D\le 5$ Euclidean space.

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