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arXiv 1312.7367hep-th
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双弦论作用量的比较

Comparing Double String Theory Actions

Luca De Angelis, S. J. Gabriele Gionti, Raffaele Marotta, Franco Pezzella

摘要:

为了更深入地理解弦论的一个明显的T-对偶不变量表述,本文对Tseytlin提出的非协变作用量和Hull提出的协变作用量进行了详细的比较.这些是通过使弦坐标和它们的弦在世界片作用量中以相同的方式显式出现而获得的,因此,弦坐标沿紧维“加倍”。在讨论了模型和相对量子化中的约束性质后,结果表明弦坐标和它们的导数表现得像“非对易”相空间型坐标,但它们在傅里叶模式方面的表达式生成了标准玻色弦公式的振子代数。证明了这两个公式的等价性。此外,还讨论了开弦解。

英文摘要:

Aimed to a deeper comprehension of a manifestly T-dual invariant formulation of string theory, in this paper a detailed comparison between the non-covariant action proposed by Tseytlin and the covariant one proposed by Hull is done. These are obtained by making both the string coordinates and their duals explicitly appear, on the same foot, in the world-sheet action, so "doubling" the string coordinates along the compact dimensions. After a discussion of the nature of the constraints in both the models and the relative quantization, it results that the string coordinates and their duals behave like "non-commuting" phase space type coordinates but their expressions in terms of Fourier modes generate the oscillator algebra of the standard bosonic string formulation. A proof of the equivalence of the two formulations is given. Furthermore, open-string solutions are also discussed.

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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