Boundary states for the rolling D-branes in NS5 background
Boundary states for the rolling D-branes in NS5 background
复制标题
DOI：
10.1088/1126-6708/2004/07/020
复制
发表时间：
2004-06
影响因子：
5.4
通讯作者：
Y. Nakayama;Yuji Sugawara;H. Takayanagi
中科院分区：
文献类型：
--
作者：
Y. Nakayama;Yuji Sugawara;H. Takayanagi
本文利用经典的DBI分析方法，构造了描述Kutasov最近发现的NS 5背景下的"滚动D膜解“的含时边界态.我们首先调查的非紧膜在NS5背景下的一些方面的基础上已知的边界状态= 2刘维尔理论。我们考虑两种类型的非紧膜，一种是BPS膜，另一种是非BPS但稳定的膜。然后，我们阐明了如何芯旋转的非BPS的一个适当的。我们证明了Wick旋转边界态在经典极限下实现了滚动D膜的正确轨道，并且由于非平凡能量阻尼因子的存在，导致了开弦的良好的谱密度.我们进一步研究了圆柱振幅和大质量闭弦模的发射率。
In this paper we construct the time dependent boundary states describing the ``rolling D-brane solutions'' in the NS5 background discovered recently by Kutasov by means of the classical DBI analysis. We first survey some aspects of non-compact branes in the NS5 background based on known boundary states in the = 2 Liouville theory. We consider two types of non-compact branes, one of which is BPS and the other is non-BPS but stable. Then we clarify how to Wick-rotate the non-BPS one appropriately. We show that the Wick-rotated boundary state realizes the correct trajectory of rolling D-brane in the classical limit, and leads to well behaved spectral densities of open strings due to the existence of non-trivial damping factors of energy. We further study the cylinder amplitudes and the emission rates of massive closed string modes.