Initial condition for the minimal isocurvature scenario.

Initial condition for the minimal isocurvature scenario.
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最小等曲率场景的初始条件。

DOI:
10.1103/physrevd.44.970
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发表时间:
1991
期刊:
Physical review. D, Particles and fields
影响因子:
--
通讯作者:
Yokoyama
Yokoyama
中科院分区:
--
文献类型:
--
作者:
Sasaki;Yokoyama

文献摘要

被引文献

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本文导出了由空间变化的Majoron场引起的具有空间依赖{italCP}破坏的重Majorana轻子衰变所引起的重子数涨落的功率谱的一个恰当表达式。的频谱显式计算幂律膨胀模型,发现几乎是规模不变的小尺度和白色噪声在大尺度上。在合理的假设下,我们提出了一个自然的粒子物理模型,它提供了一个适当的初始条件的最小等曲率的大规模结构形成的情况。
We derive a proper expression for the power spectrum of baryon-number fluctuations arising from decay of a heavy Majorana lepton with space-dependent {ital CP} violation due to a spatially varying Majoron field. The spectrum is explicitly calculated in a power-law inflation model and found to be almost scale invariant on small scales and white noise on large scales. Under reasonable assumptions, we present a natural particle-physics model which provides an appropriate initial condition for the minimal isocurvature scenario of large-scale structure formation.