Bounds on very low reheating scenarios after Planck

Bounds on very low reheating scenarios after Planck
复制标题

普朗克之后极低再加热情景的界限

DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
O. Pisanti
O. Pisanti
中科院分区：
--
文献类型：
--
作者：
P. F. D. Salas;M. Lattanzi;G. Mangano;G. Miele;S. Pastor;O. Pisanti

文献摘要

被引文献

相似文献

我们考虑了非常低再加热场景的情况[${T}_{mathm {RH}}ensuremath{sim}mathcal{O}(mathm {MeV})$]，并更好地计算了遗迹中微子背景（具有三种风味振荡）的产生。在95%的置信水平上，再加热温度的下限${T}_{mathrm{RH}}g4.1 ext{} ext{}mathrm{MeV}$是由大爆炸核合成得到的，而从普朗克数据（允许中微子质量变化）得到的下限${T}_{mathrm{RH}}g4.7 ext{} ext{}mathrm{MeV}$是迄今为止最严格的再加热温度下限。在非常低的再加热温度下，中微子的质量可能达到1ev。
We consider the case of very low reheating scenarios [${T}_{mathrm{RH}}ensuremath{sim}mathcal{O}(mathrm{MeV})$] with a better calculation of the production of the relic neutrino background (with three-flavor oscillations). At 95% confidence level, a lower bound on the reheating temperature ${T}_{mathrm{RH}}g4.1 ext{ } ext{ }mathrm{MeV}$ is obtained from big bang nucleosynthesis, while ${T}_{mathrm{RH}}g4.7 ext{ } ext{ }mathrm{MeV}$ from Planck data (allowing neutrino masses to vary), the most stringent bound on the reheating temperature to date. Neutrino masses as large as 1 eV are possible for very low reheating temperatures.