arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2603.09586hep-thgr-qc
收藏

对偶性与稀释子

Duality and Dilaton

Department of Theoretical Physics, P. N. Lebedev Physics Institute(列别捷夫物理研究所理论物理系);Department of Physics and Astronomy, The Johns Hopkins University(约翰斯·霍普金斯大学物理与天文学系)

A. A. Tseytlin

AI总结:

本文研究了目标空间对偶性下稀释子的变换规律,并通过宇宙学解示例探讨了非静态对偶性在高阶展开中的修正问题。

摘要:

我们回顾并详述了在通常的r→α'/r目标空间对偶性下稀释子的变换问题及其非静态推广(或σ模型对偶性)。发现变换规律r→α'/r,ϕ→ϕ−ln(r/√α'),该规律在一阶σ模型水平上保证对偶性,应在两阶(及更高阶)展开中进行修正。非静态对偶性在D≥2的宇宙学解中通过时间依赖的时空torus半径示例予以说明。

英文摘要:

We review and elaborate on the issue of the dilaton transformation under the usual $r \rightarrow α'/r$ target space duality and its non-static generalization (or $σ$-model duality). It is found that the transformation law $r \rightarrow α'/r$, $ϕ\rightarrow ϕ- \ln(r/\sqrt{α'})$ which guarantees duality at the one-loop $σ$-model level should be modified at two (and higher) loop order. The non-static duality is illustrated on the example of cosmological solutions in $D \ge 2$ with time-dependent radii of space torus.

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。

↑