Resonant graviton-photon conversion with stochastic magnetic field in the universe

被引：0
|
作者：
Addazi, Andrea [1 ,2 ]
Capozziello, Salvatore [3 ,4 ,5 ]
Gan, Qingyu [4 ,5 ]
机构：
[1] Sichuan Univ, Coll Phys, Chengdu 610064, Peoples R China
[2] INFN, Lab Nazl Frascati, Via E Fermi 54, I-00044 Rome, Italy
[3] Univ Napoli Federico II, Dipartimento Fis E Pancini, Compl Univ Monte S Angelo,Edificio G,Via Cinthia, I-80126 Naples, Italy
[4] Scuola Super Meridionale, Largo S Marcellino 10, I-80138 Naples, Italy
[5] Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy
来源：
PHYSICS OF THE DARK UNIVERSE | 2025年 / 48卷
基金：
中国国家自然科学基金;
关键词：
Graviton-photon oscillations; Stochastic magnetic field; Universe expansion; Resonance; TRANSITION;
D O I：
10.1016/j.dark.2025.101844
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate graviton-photon oscillations sourced by cosmological magnetic fields from Gertsenshtein effect. We adopt a robust perturbative approach and we find that the conversion probability from graviton to photon can be resonantly enhanced in monochromatic, multi-chromatic and scale invariant spectrum models of stochastic magnetic field fluctuations. In addition, the expansion of the Universe acts as a decoherence factor, which demands a natural discretization scheme along the line of sight. Including also decoherence from cosmic acceleration, we find that conversion probabilities for stochastic magnetic fields are completely different than results predicted from existing magnetic domain-like models in a wide range of magnetic strengths and correlation lengths. Resonances can be tested by radio telescopes as a probe of high frequency gravitational wave sources and primordial magnetogenesis mechanisms.
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页数：14
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