Stringy effects during inflation and reheating
Stringy effects during inflation and reheating
复制标题
膨胀和再加热过程中的拉丝效应
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
R. Myers
中科院分区：
文献类型：
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作者：
A. Frey;A. Mazumdar;R. Myers
我们在多喉弦紧化的背景下考虑暴胀宇宙学。在喉道之间的翘曲差异很大的情况下，弦和卡鲁扎-克莱因物理学可以对暴胀和再加热的宇宙学产生潜在的可观察的修正。首先，我们证明了一个非常低的弦尺度在基态紧化是不兼容的高哈勃尺度在通货膨胀期间，我们建议，紧化几何在通货膨胀期间被改变。在这种配置中，最低尺度刚好高于哈勃尺度，这与有效场理论兼容，但仍然导致潜在的可观测宇宙微波背景校正。此外，在适当的区域的参数空间，我们发现，再加热导致一个阶段的长开弦的标准模型部门（通常的辐射为主的阶段之前）。我们勾勒宇宙学的长弦阶段，我们讨论可能的观测结果。
We consider inflationary cosmology in the context of string compactifications with multiple throats. In scenarios where the warping differs significantly between throats, string and Kaluza-Klein physics can generate potentially observable corrections to the cosmology of inflation and reheating. First we demonstrate that a very low string scale in the ground state compactification is incompatible with a high Hubble scale during inflation, and we propose that the compactification geometry is altered during inflation. In this configuration, the lowest scale is just above the Hubble scale, which is compatible with the effective field theory but still leads to potentially observable cosmic microwave background corrections. Also in the appropriate region of parameter space, we find that reheating leads to a phase of long open strings in the standard model sector (before the usual radiation-dominated phase). We sketch the cosmology of the long string phase and we discuss possible observational consequences.