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Dukjae, Jang
초강력 레이저과학 연구단
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Big Bang nucleosynthesis in a weakly non-ideal plasma

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Title
Big Bang nucleosynthesis in a weakly non-ideal plasma
Author(s)
Dukjae Jang; Youngshin Kwon; Kyujin Kwak; Myung-Ki Cheoun
Publication Date
2021-06
Journal
ASTRONOMY & ASTROPHYSICS, v.650
Publisher
EDP Sciences
Abstract
© 2021 ESO.We propose a correction of the standard Big Bang nucleosynthesis (BBN) scenario to resolve the primordial lithium problem by considering a possibility that the primordial plasma can deviate from the ideal state. In the standard BBN, the primordial plasma is assumed to be ideal, with particles and photons satisfying the Maxwell-Boltzmann and Planck distribution, respectively. We suggest that this assumption of the primordial plasma being ideal might oversimplify the early Universe and cause the lithium problem. We find that a deviation of photon distribution from the Planck distribution, which is parameterised with the help of Tsallis statistics, can resolve the primordial lithium problem when the particle distributions of the primordial plasma still follow the Maxwell-Boltzmann distribution. We discuss how the primordial plasma can be weakly non-ideal in this specific fashion and its effects on the cosmic evolution.
URI
https://pr.ibs.re.kr/handle/8788114/9957
DOI
10.1051/0004-6361/202038478
ISSN
0004-6361
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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