论文标题
在非平凡的nambu-goldstone模式的存在下轴心宇宙学
Axion cosmology in the presence of non-trivial Nambu-Goldstone modes
论文作者
论文摘要
考虑到动力学伪nambu-goldstone模式，轴心宇宙学被重新审视，最近指出了其重要性。当Peccei-Quinn（PQ）对称被手性u（1）单元打破时，发现动力学Nambu-Goldstone模式的效果使轴突暗物质无法维持。当PQ对称性扩展并被两个单词打破时，我们发现轴心宇宙学可以起作用，但是与文献中研究的轴突宇宙学有几个差异。差异是（1）暗物质比例为$ 1/{\ rm cosmic \;规模\;因子}^3 $源于模量字段而不是从通常的角度字段产生，（2）深度量子的质量在超轻质范围内，$（10^{ - 32} \ sim 10^{ - 14}）\，$ ev，（3）与目前的订单密度相关的暗能量的出现（$^4 $^4 $^4 $^4 $^4 $^4） （5）引入与重力的共形耦合时，PQ对称破坏后的缓慢滚动通胀。
Axion cosmology is reexamined taking into account effect of kinetic pseudo Nambu-Goldstone modes, with its importance recently pointed out. When Peccei-Quinn (PQ) symmetry is broken by a chiral U(1) singlet, it is found that the effect of kinetic Nambu-Goldstone mode makes the axion dark matter untenable. When PQ symmetry is extended and is broken by two singlets, we find axion cosmology to work, but there are several differences from the axion cosmology studied in the literature. The differences are (1) ordinary type of dark matter scaling as $1/{\rm cosmic \; scale\; factor}^3$ arising from a modulus field and not from the usual angular field, (2) mass of the dark matter quantum in the ultralight range, $(10^{-32} \sim 10^{-14})\,$eV, (3) emergence of dark energy with the present density of order (a few meV)$^4$ consistent with observations, (4) presence of a long range spin-dependent force, (5) slow-roll inflation after PQ symmetry breaking when conformal coupling to gravity is introduced.
