Dynamical Screening Effects on Big Bang Nucleosynthesis. (arXiv:2102.09801v2 [nucl-th] UPDATED)
<a href="http://arxiv.org/find/nucl-th/1/au:+Hwang_E/0/1/0/all/0/1">Eunseok Hwang</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Jang_D/0/1/0/all/0/1">Dukjae Jang</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Park_K/0/1/0/all/0/1">Kiwan Park</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Kusakabe_M/0/1/0/all/0/1">Motohiko Kusakabe</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Kajino_T/0/1/0/all/0/1">Toshitaka Kajino</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Balantekin_A/0/1/0/all/0/1">A. Baha Balantekin</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Maruyama_T/0/1/0/all/0/1">Tomoyuki Maruyama</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Ryu_C/0/1/0/all/0/1">Chang-Mo Ryu</a>, <a href="http://arxiv.org/find/nucl-th/1/au:+Cheoun_M/0/1/0/all/0/1">Myung-Ki Cheoun</a>
We study dynamical screening effects of nuclear charge on big bang
nucleosynthesis (BBN). A moving ion in plasma creates a distorted electric
potential leading to a screening effect which is different from the standard
static Salpeter formula. We consider the electric potential for a moving test
charge, taking into account dielectric permittivity in the unmagnetized
Maxwellian plasma during the BBN epoch. Based on the permittivity in a BBN
plasma condition, we present the Coulomb potential for a moving nucleus, and
show that enhancement factor for the screening of the potential increases the
thermonuclear reaction rates by a factor order of 10^(-7). In the Gamow energy
region for nuclear collisions, we find that the contribution of the dynamical
screening is less than that of the static screening case, consequently which
primordial abundances hardly change. Based on the effects of dynamical
screening under various possible astrophysical conditions, we discuss related
plasma properties required for possible changes of the thermal nuclear
reactions.
We study dynamical screening effects of nuclear charge on big bang
nucleosynthesis (BBN). A moving ion in plasma creates a distorted electric
potential leading to a screening effect which is different from the standard
static Salpeter formula. We consider the electric potential for a moving test
charge, taking into account dielectric permittivity in the unmagnetized
Maxwellian plasma during the BBN epoch. Based on the permittivity in a BBN
plasma condition, we present the Coulomb potential for a moving nucleus, and
show that enhancement factor for the screening of the potential increases the
thermonuclear reaction rates by a factor order of 10^(-7). In the Gamow energy
region for nuclear collisions, we find that the contribution of the dynamical
screening is less than that of the static screening case, consequently which
primordial abundances hardly change. Based on the effects of dynamical
screening under various possible astrophysical conditions, we discuss related
plasma properties required for possible changes of the thermal nuclear
reactions.
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