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arXiv 0705.3292hep-th
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开玻色弦论中规范不变的精确重整化群和理想作用量

Gauge Invariant Exact Renormalization Group and Perfect Actions in the Open Bosonic String Theory

B. Sathiapalan

摘要:

将精确重整化群应用于描述玻色开弦背景的世界片理论,得到开弦场的运动方程。利用环变量技术,方程可以构造为规范不变的。此外,它们在(自由)质量壳层之外也是有效的。这需要保持一个有限的截止。因此,我们有一个有趣的情况下,尺度不变的世界单理论与有限的世界单截止。这是可能的,因为有无限数量的运营商的系数可以调整。这与在格点规范理论中提出的“完全作用量”或“改进作用量”是相同的,即使在保持有限格点间距的情况下,也可以重现连续谱的结果。

英文摘要:

The exact renormalization group is applied to the world sheet theory describing bosonic open string backgrounds to obtain the equations of motion for the fields of the open string. Using loop variable techniques the equations can be constructed to be gauge invariant. Furthermore they are valid off the (free) mass shell. This requires keeping a finite cutoff. Thus we have the interesting situation of a scale invariant world sheet theory with a finite world sheet cutoff. This is possible because there are an infinite number of operators whose coefficients can be tuned. This is in the same sense that "perfect actions" or "improved actions" have been proposed in lattice gauge theory to reproduce the continuum results even while keeping a finite lattice spacing.

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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