String Two-Point Amplitude Revisited by Operator Formalism
String Two-Point Amplitude Revisited by Operator Formalism
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算子形式主义重温弦两点振幅
DOI：
10.1134/s1547477120050313
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发表时间：
2020
影响因子：
0.5
通讯作者：
Shigenori Seki
中科院分区：
文献类型：
--
作者：
Kishimoto Isao;Sasaki Tomoko;Seki Shigenori;Takahashi Tomohiko;橋本 道雄;Shigenori Seki
摘要：虽然人们认为树级弦两点振幅由于剩余规范对称的无限体积而消失，但最近在路径积分形式中指出了非零弦两点振幅。我们用算子的形式来考虑它们。在开放玻色子弦理论中，我们通过引入一种新颖的多BRST精确算子，成功地获得了非零两点振幅。然后我们展示了闭弦理论中的一些试验。
AbstractAlthough one has trusted that the tree-level string two-point amplitudes vanish due to the infinite volume of residual gauge symmetry, recently the non-zero string two-point amplitudes have been pointed out in the path integral formalism. We consider them in the operator formalism. We have succeeded in obtaining the non-zero two-point amplitude in an open bosonic string theory by introducing a novel mostly BRST exact operator. We then show some trials in a closed string theory.