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arXiv 0908.3379hep-th
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Dirac-Born-Infeld作用量与超光速单极

Dirac-Born-Infeld actions and Tachyon Monopoles

Vincenzo Calò, Gianni Tallarita, Steven Thomas

摘要:

研究了在平坦空间中描述两个重合非BPS D9-膜的非交换DBI作用量的磁解。正如在扭结和涡旋孤子快子解决方案的情况下,充分的DBI非BPS行动,如以前所分析的森,这些双折射配置是奇异的,在第一个实例,需要正规化。我们讨论了一个合适的非阿贝尔算子,并证明了它解决了运动方程的正则化参数的领先顺序。波动进行了研究,并示出描述一个余维3 BPS的D 6膜。导出了其张力的计算公式。我们评论的含义,我们的结果从迹(Tr)和对称化迹(Str)的规定的非阿贝尔DBI行动的重合非BPS D9-膜。

英文摘要:

We investigate magnetic monopole solutions of the non-abelian DBI action describing 2 coincident non-BPS D9-branes in flat space. Just as in the case of kink and vortex solitonic tachyon solutions of the full DBI non-BPS actions, as previously analyzed by Sen, these monopole configurations are singular in the first instance and require regularization. We discuss a suitable non-abelian ansatz and show it solves the equations of motion to leading order in the regularization parameter. Fluctuations are studied and shown to describe a codimension 3 BPS D6-brane. A formula is derived for its tension. We comment on the implication to our results from both the trace (Tr) and symmetrized trace (Str) prescriptions of the non-abelian DBI action of coincident non-BPS D9-branes.

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