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arXiv 0806.1491hep-thcond-mat.stat-mechmath-phmath.MP
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滚动快子背景中的N点函数

N-point functions in rolling tachyon background

Niko Jokela, Matti Jarvinen, Esko Keski-Vakkuri

摘要:

本文研究了类时边界Liouville理论中的n点边界关联函数,它与衰变不稳定D-膜的开弦多重产生有关。我们给出了一个精确的结果的一点函数的快子顶点运营商,并表明它是一致的与以前提出的关系,在弦论的保守电荷。我们还讨论了一点振幅何时消失。使用一个简单的微扰展开,我们找到一个明确的表达快子n点振幅的所有n,但结果仍然是一个玩具模型。该计算使用了一个新的渐近近似Toeplitz行列式,来自有关系统的戴森气体在有限的温度。

英文摘要:

We study n-point boundary correlation functions in Timelike Boundary Liouville theory, relevant for open string multiproduction by a decaying unstable D-brane. We give an exact result for the one-point function of the tachyon vertex operator and show that it is consistent with a previously proposed relation to a conserved charge in string theory. We also discuss when the one-point amplitude vanishes. Using a straightforward perturbative expansion, we find an explicit expression for a tachyon n-point amplitude for all n, however the result is still a toy model. The calculation uses a new asymptotic approximation for Toeplitz determinants, derived by relating the system to a Dyson gas at finite temperature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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