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arXiv 1106.2097hep-th
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背景快子场存在下的运动膜

Moving Branes in Presence of the Background Tachyon Fields

Zahra Rezaei, Davoud Kamani

摘要:

在背景场为开弦快子场的情况下,我们计算了运动D $p$ -膜的边界态。我们将讨论快子凝聚对边界态的影响。它导致了一个与低维运动D-膜或静止瞬变D-膜相关联的边界态。前者来源于D-膜世界体积的空间凝聚,后者来源于D-膜世界体积的时间凝聚。利用边界态,我们还研究了任意两个D $p_1$和D $p_2$ -膜之间的相互作用振幅.由于背景快子场的存在,振幅的长程行为明显偏离了传统的形式。

英文摘要:

We compute the boundary state associated with a moving D$p$-brane in the presence of the open string tachyon field as a background field. The effect of the tachyon condensation on the boundary state will be discussed. It leads to a boundary state associated with a lower dimensional moving D-brane or a stationary instantonic D-brane. The former originates from condensation along the spatial directions and the latter comes from the temporal direction of the D-brane's worldvolume. Using the boundary state we also study the interaction amplitude between two arbitrary D$p_1$ and D$p_2$-branes. The long range behavior of the amplitude is investigated which shows an obvious deviation from the conventional form, due to the presence of the background tachyon field.

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