On light cone SFT contact terms in a plane wave
On light cone SFT contact terms in a plane wave
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平面波中的光锥 SFT 接触项
DOI：
10.1088/1126-6708/2003/10/055
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发表时间：
2002
影响因子：
5.4
通讯作者：
A. Volovich
中科院分区：
文献类型：
--
作者：
R. Roiban;M. Spradlin;A. Volovich
测试非零弦耦合 g s 下的 BMN 对应关系需要单环弦场理论计算。在 g s 2 阶，单弦态之间的光锥弦场论哈密顿量的矩阵元素接收两个贡献：迭代立方相互作用和接触项 {Q,}，其存在由超对称性决定。在本文中，我们计算了具有两个弦激励的中间态集的两项的主要大 μp +α' 贡献。我们发现与规范理论的基无关阶 g 2 2 结果精确一致。
Testing the BMN correspondence at non-zero string coupling g s requires a one-loop string field theory calculation. At order g s 2 , matrix elements of the light-cone string field theory hamiltonian between single-string states receive two contributions: the iterated cubic interaction, and a contact term {Q,} whose presence is dictated by supersymmetry. In this paper we calculate the leading large μp +α' contribution from both terms for the set of intermediate states with two string excitations. We find precise agreement with the basis-independent order g 2 2 results from gauge theory.