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Dukjae, Jang
초강력 레이저과학 연구단
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Dynamical screening effects on big bang nucleosynthesis

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Title
Dynamical screening effects on big bang nucleosynthesis
Author(s)
Eunseok Hwang; Dukjae Jang; Kiwan Park; Motohiko Kusakabe; Toshitaka Kajino; A. Baha Balantekin; Tomoyuki Maruyama; Chang-Mo Ryu; Myung-Ki Cheoun
Publication Date
2021-11
Journal
Journal of Cosmology and Astroparticle Physics, v.2021, no.11
Publisher
IOP Publishing
Abstract
A moving ion in plasma creates a deformed electric potential depending on the ion velocity, which leads to the distinct screening effect compared to the standard static Salpeter formula. In this paper, adopting the test charge method, we explore the dynamical screening effects on big bang nucleosynthesis (BBN). We find that the high temperature in the early universe causes the ion velocity to be faster than the solar condition so that the electric potential is effectively polarized. However, the low density of background plasma components significantly suppresses the dynamical screening effects on thermonuclear reaction rates during the BBN epoch. We compare our results with several thermonuclear reaction rates for solar fusion considering the dynamical screening effects. Also, we discuss the additional plasma properties in other astrophysical sites for the possible expansion from the present calculation in the future.
URI
https://pr.ibs.re.kr/handle/8788114/11752
DOI
10.1088/1475-7516/2021/11/017
ISSN
1475-7516
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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