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arXiv 1202.4298hep-th
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(开)弦论的圈变量和规范不变精确重整化群方程

Loop Variables and Gauge Invariant Exact Renormalization Group Equations for (Open) String Theory

B. Sathiapalan

摘要:

给出了一般背景下描述玻色开弦的世界片理论的精确重整化群方程。环变量技术被用来使方程规范不变。这是明确制定了3级。这个方程在场论中是二次的,可以看作是弦场论方程的一个提议。在早期的循环变量方法中,理论有一个额外的空间维度,质量通过降维得到。基于西格玛模型RG,它是背景无关的。有趣的是,与BRST弦场论相反,规范变换并没有被计算出的水平的相互作用所修改。对于大质量的高自旋场,相互作用可以用规范不变场的强度来表示,而非零质量是必不可少的。这让人想起无质量向量场的阿贝尔玻恩-因费尔德作用量(以及导数修正),它也是用场强来表示的。

英文摘要:

An exact renormalization group equation is written down for the world sheet theory describing the bosonic open string in general backgrounds. Loop variable techniques are used to make the equation gauge invariant. This is worked out explicitly up to level 3. The equation is quadratic in the fields and can be viewed as a proposal for a string field theory equation. As in the earlier loop variable approach, the theory has one extra space dimension and mass is obtained by dimensional reduction. Being based on the sigma model RG, it is background independent. It is intriguing that in contrast to BRST string field theory, the gauge transformations are not modified by the interactions up to the level calculated. The interactions can be written in terms of gauge invariant field strengths for the massive higher spin fields and the non zero mass is essential for this. This is reminiscent of Abelian Born-Infeld action (along with derivative corrections) for the massless vector field, which is also written in terms of the field strength.

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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