Inflationary gravitational waves, pulsar timing data and low-scale-leptogenesis
Inflationary gravitational waves, pulsar timing data and low-scale-leptogenesis
复制标题
暴胀引力波、脉冲星计时数据和低尺度轻子发生
DOI：
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
S. Datta
中科院分区：
文献类型：
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作者：
S. Datta
我们表明，低尺度leptogenesis机制，表现出右手中微子质量依赖的非标准宇宙学，可以使蓝倾斜暴胀引力波兼容的随机引力波（GW）背景的脉冲星定时阵列（PTA）的最新发现。右手中微子的质量标度必须是$\mathcal{O}（\rm GeV）$，才能通过熵产生将这种引力波的振幅降低到PTA的水平。除了在nHz范围内产生一个GW峰值外，这种情况还在LIGO球场上产生了另一个GW峰值。因此，最近的检测PTAs不仅是令人兴奋的GW在nHz范围内，它铺平了道路，以测试和约束机制，如低规模leptogenesis与低频和相关的测量在高频。
We show that the low-scale leptogenesis mechanisms that exhibit right-handed neutrino mass-dependent non-standard cosmology, can make blue-tilted inflationary gravitational waves compatible with recent findings of stochastic gravitational wave (GW) background by the pulsar-timing arrays (PTAs). Right-handed neutrino mass scale has to be $\mathcal{O}(\rm GeV)$, to bring down the amplitude of such gravitational waves at the level of PTAs via entropy production. Besides generating one GW peak in the nHz range, such a scenario creates another one in the LIGO ballpark. Thus the recent detection by PTAs is not only exciting for GWs in the nHz range; it paves the way to test and constrain mechanisms such as low-scale-leptogenesis with a low-frequency and correlated measurement at high-frequencies.
DOI：
10.1136/ebmh.11.4.102
发表时间：
2008-10
期刊：
Evidence Based Mental Health
影响因子：
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作者：
P. Cochat;L. Vaucoret;J. Sarles
通讯作者：
P. Cochat;L. Vaucoret;J. Sarles