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arXiv 0907.3462hep-th
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畴壁与磁通的量子融合

Quantum Fusion of Domain Walls with Fluxes

S. Bolognesi, M. Shifman, M. B. Voloshin

摘要:

我们研究如何在畴壁世界体积通量修改量子融合的两个遥远的平行畴壁成一个复合壁。基本壁通量可以分为平行和反平行分量。平行分量既不影响结合能,也不影响量子合并过程。相反,反平行通量增加了结合能,并且与天真的预期相反,抑制了量子融合。在小通量的限制,我们明确地找到反弹的解决方案和融合率作为通量的函数。我们认为,在大(反平行)通量存在一个临界值的通量(相对于在壁张力的差异),这开关完全关闭量子聚变。这种与通量有关的壁稳定现象是相当特殊的:它与任何守恒量无关。我们对通量相关的全稳定化的考虑是基于缺乏完整证据的已证实的论点。

英文摘要:

We study how fluxes on the domain wall world volume modify quantum fusion of two distant parallel domain walls into a composite wall. The elementary wall fluxes can be separated into parallel and antiparallel components. The parallel component affects neither the binding energy nor the process of quantum merger. The antiparallel fluxes, instead, increase the binding energy and, against naive expectations, suppress quantum fusion. In the small flux limit we explicitly find the bounce solution and the fusion rate as a function of the flux. We argue that at large (antiparallel) fluxes there exists a critical value of the flux (versus the difference in the wall tensions), which switches off quantum fusion altogether. This phenomenon of flux-related wall stabilization is rather peculiar: it is unrelated to any conserved quantity. Our consideration of the flux-related all stabilization is based on substantiated arguments that fall short of complete proof.

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