Boundary States of D-Branes in AdS3 Based on Discrete Series
Boundary States of D-Branes in AdS3 Based on Discrete Series
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基于离散级数的AdS3中D-膜的边界态
DOI：
10.1143/ptp.107.1245
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Yuji Sugawara
中科院分区：
文献类型：
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作者：
Yasuaki Hikida;Yuji Sugawara
我们从边界态的角度研究洛伦兹 AdS 3 背景下的 D 膜，强调开闭对偶性在弦理论中的作用。利用具有洛伦兹签名的世界表，我们用离散级数构造卡迪态。我们证明它们在开弦谱中与（1）幺正性和归一化性以及（2）谱流对称性兼容。我们还讨论了它们的膜解释。我们进一步表明，在 AdS 3 × S 3 × T 4 上的超弦情况下，我们的 Cardy 状态在开弦通道中产生无限数量的物理 BPS 状态，谱流在这些状态上的作用一致。
We study D-branes in the Lorentzian AdS 3 background from the viewpoint of boundary states, emphasizing the role of open-closed duality in string theory. Employing the world sheet with Lorentzian signature, we construct the Cardy states with the discrete series. We show that they are compatible with (1) unitarity and normalizability, and (2) the spectral flow symmetry, in the open string spectrum. We also discuss their brane interpretation. We further show that in the case of superstrings on AdS 3 × S 3 × T 4 , our Cardy states yield an infinite number of physical BPS states in the open string channel, on which the spectral flows act consistently.