Modified dispersion relations and a potential explanation of the EDGES anomaly
| العنوان: | Modified dispersion relations and a potential explanation of the EDGES anomaly |
|---|---|
| المؤلفون: | Saurya Das, Mitja Fridman, Gaetano Lambiase, Antonio Stabile, Elias C. Vagenas |
| المصدر: | European Physical Journal |
| بيانات النشر: | Springer, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | High Energy Physics - Theory, Physics and Astronomy (miscellaneous), High Energy Physics - Theory (hep-th), Quantum gravity: Cosmological observations, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, Engineering (miscellaneous), General Relativity and Quantum Cosmology |
| الوصف: | The Experiment to Detect the Global Epoch of Reionisation Signature (EDGES) collaboration has recently reported an important result related to the absorption signal in the Cosmic Microwave Background radiation spectrum. This signal corresponds to the red-shifted 21-cm line at $z \simeq 17.2$, whose amplitude is about twice the expected value. This represents a deviation of approximately $3.8\sigma$ from the predictions of the standard model of cosmology, i.e. the $\Lambda$CDM model. This opens a window for testing new physics beyond both the standard model of particle physics and the $\Lambda$CDM model. In this work, we explore the possibility of explaining the EDGES anomaly in terms of modified dispersion relations. The latter are typically induced in unified theories and theories of quantum gravity, such as String/M-theories and Loop Quantum Gravity. These modified dispersion relations affect the density of states per unit volume and thus the thermal spectrum of the Cosmic Microwave Background photons. The temperature of the 21-cm brightness temperature is modified accordingly giving a potential explanation of the EDGES anomaly. Comment: 11 pages, 8 figures |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccb2106a716bce5662af2bc8f790f96e http://repo.scoap3.org/api |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ccb2106a716bce5662af2bc8f790f96e |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |