论文标题
二维字符串理论的分歧至复杂幅度
Divergent to Complex Amplitudes in Two Dimensional String Theory
论文作者
论文摘要
在最近的一篇论文中，巴尔萨扎（Balthazar），罗德里格斯（Rodriguez）和尹（Yin）在一个intsanton对二维字符串理论的散射幅度的贡献与矩阵模型中对第一个转向降低顺序的贡献之间的贡献很大。比较是通过分析继续将外部能量延续到假想值的，因为对于实际能量，字符串理论结果差异。我们使用字符串场理论的见解为弦理论振幅提供有限的表达式。我们还分析表明，以用方式计算的字符串理论振幅的虚构部分重现了涉及多个闭合字符串的一般散射幅度的完整矩阵模型结果。
In a recent paper, Balthazar, Rodriguez and Yin found remarkable agreement between the one instanton contribution to the scattering amplitudes of two dimensional string theory and those in the matrix model to the first subleading order. The comparison was carried out numerically by analytically continuing the external energies to imaginary values, since for real energies the string theory result diverges. We use insights from string field theory to give finite expressions for the string theory amplitudes for real energies. We also show analytically that the imaginary parts of the string theory amplitudes computed this way reproduce the full matrix model results for general scattering amplitudes involving multiple closed strings.
