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arXiv 1410.4178hep-th
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T膜作为膜内膜

T-branes as branes within branes

Andres Collinucci, Raffaele Savelli

摘要:

被称为“T-膜”的7-膜的束缚态具有与通常的几何直觉相悖的性质。例如,n个重合膜的规范群可能不是U(n)。更令人惊讶的是,物质可能会出现在意想不到的位置,比如点。通过分析微扰IIB型弦论的T-膜在快子凝聚图中的性质,我们得到了以下的认识:在一个大类的模型中,快子可以对角化,即使世界体积Higgs不能。在这些情况下,我们可以更清楚地看到这些束缚态的结构,从而大大简化了规范群和谱的分析。当快子不可对角化时,物质定域在意想不到的位置,我们发现有一个低维的膜束缚在7-膜上。

英文摘要:

Bound states of 7-branes known as 'T-branes' have properties that defy usual geometric intuition. For instance, the gauge group of n coincident branes may not be U(n). More surprisingly, matter may show up at unexpected loci, such as points. By analyzing T-branes of perturbative type IIB string theory in the tachyon condensation picture we gain the following insights: In a large class of models, the tachyon can be diagonalized even though the worldvolume Higgs cannot. In those cases, we see the structure of these bound states more manifestly, thereby drastically simplifying analysis of gauge groups and spectra. Whenever the tachyon is not diagonalizable, matter localizes at unexpected loci, and we find that there is a lower-dimensional brane bound to the 7-brane.

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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