arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.5544hep-ph
收藏

宇宙弦对强耦合模的宇宙学约束

Cosmological Constraints on Strongly Coupled Moduli from Cosmic Strings

Eray Sabancilar

摘要:

推导出了对模的宇宙学约束,其与物质的耦合比普朗克质量抑制的耦合更强。特别是,模量被认为是由宇宙弦的振荡回路和约束的影响,大爆炸核合成和他们的贡献,弥漫伽马射线背景和暗物质。大体积和翘曲的IIB型通量紧致化被视为强耦合模量存在的例子。最后,得到了宇宙弦张力、模量质量和模量耦合常数的约束条件,并指出当耦合常数足够大时,这些约束条件被显著放宽.此外,考虑了热产生模量的影响,并推导出相应的约束条件。

英文摘要:

Cosmological constraints on moduli, whose coupling to matter is stronger than Planck mass suppressed coupling, are derived. In particular, moduli are considered to be produced by oscillating loops of cosmic strings and constraints are obtained from their effects on big bang nucleosynthesis and their contribution to diffuse gamma ray background and dark matter. Large volume and warped Type-IIB flux compactifications are taken as examples where strongly coupled moduli are present. Finally, the constraints on cosmic string tension, modulus mass and modulus coupling constant are obtained and it is shown that the constraints are relaxed significantly when the coupling constant is large enough. In addition, the effects of thermal production of moduli are considered and the corresponding constraints are derived.

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。

↑