Scattering of closed string states from a quantized D-particle
Scattering of closed string states from a quantized D-particle
复制标题
量子化 D 粒子的闭弦态散射
DOI：
10.1016/s0550-3213(97)00298-8
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Y. Kazama
中科院分区：
文献类型：
--
作者：
S. Hirano;Y. Kazama
通过发展一个适当的路径积分形式，我们计算，在玻色弦理论中，从D-粒子，其中的D-粒子的集体坐标是完全量子化的封闭弦状态的散射盘振幅。因此，自然要考虑D粒子的反冲。我们的结果可以很容易地在封闭弦通道中分解，得到描述反冲D粒子的边界态。这与Ishibashi最近提出的BRST不变顶点在导数展开中的领先顺序一致，但它将在随后的顺序中得到修正。我们的形式主义的优点是，它是可扩展的，以处理更一般的过程，涉及多个D-粒子。本文还讨论了一种观点，认为我们的工作是在描述CFT的动力学跃迁。
By developing an appropriate path-integral formalism, we compute, in bosonic string theory, the disk amplitude for the scattering of closed string states from a D-particle, in which the collective coordinate of the D-particle is fully quantized. As a consequence, the recoil of the D-particle is naturally taken into account. Our result can be readily factorized in the closed string channel to yield the boundary state describing the recoiling D-particle. This turned out to agree with the BRST invariant vertex recently proposed by Ishibashi to the leading order in the derivative expansion, but it will receive corrections in subsequent orders. The advantage of our formalism is that it is extendible to deal with more general processes involving multiple D-particles. A viewpoint regarding our work as describing a dynamical transition of CFT's is also discussed.