Modeling dark photon oscillations in our inhomogeneous Universe
Modeling dark photon oscillations in our inhomogeneous Universe
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模拟我们不均匀宇宙中的暗光子振荡
DOI:
10.1103/physrevd.102.103533
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发表时间:
2020
影响因子:
5
通讯作者:
Ruderman, Joshua T.
中科院分区:
文献类型:
--
作者:
Caputo, Andrea;Liu, Hongwan;Mishra-Sharma, Siddharth;Ruderman, Joshua T.
A dark photon may kinetically mix with the Standard Model photon, leading to observable cosmological signatures. The mixing is resonantly enhanced when the dark photon mass matches the primordial plasma frequency, which depends sensitively on the underlying spatial distribution of electrons. Crucially, inhomogeneities in this distribution can have a significant impact on the nature of resonant conversions. We develop and describe, for the first time, a general analytic formalism to treat resonant oscillations in the presence of inhomogeneities. Our formalism follows from the theory of level crossings of random fields and only requires knowledge of the one-point probability density function (PDF) of the underlying electron number density fluctuations. We validate our formalism using simulations and illustrate the photon-to-dark photon conversion probability for several different choices of PDFs that are used to characterize the low-redshift Universe.
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DOI:
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21
影响因子:
--
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DOI:
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DOI:
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发表时间:
2022
期刊:
影响因子:
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作者:
小島 悠暉;近藤 博基;田中 宏昌;石川 健治;橋爪 博司;堀 勝;米徳大輔;北嶋直弥
通讯作者:
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DOI:
10.1086/309412
发表时间:
2000-01
期刊:
The Astrophysical Journal
影响因子:
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