Constraining the nuclear symmetry energy from electric dipole polarizability and neutron skin in $^{208}\mathrm{Pb}$ within antisymmetrized molecular dynamics
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866915811172548608 |
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| author | Niu, Dandan Wang, Xinyu Cui, Ying Zhao, Qiang Zhao, Kai Ono, Akira Zhang, Yingxun |
| author_facet | Niu, Dandan Wang, Xinyu Cui, Ying Zhao, Qiang Zhao, Kai Ono, Akira Zhang, Yingxun |
| contents | The electric dipole polarizability $α_D$ and the neutron skin thickness $ΔR_{np}$ of $^{208}\mathrm{Pb}$ are two powerful and clean probes to constrain the symmetry energy at subsaturation density. Within the framework of the antisymmetrized molecular dynamics (AMD) model, we found that the sensitive densities of $α_D$ and $ΔR_{np}$ ranges from the 0.2$ρ_0$ to 0.57$ρ_0$. To well describe the data of $α_D$ and $ΔR_{np}$, the effective interaction parameters with $S_0\sim34$ MeV and $L=66-75$ MeV are favored. The constraints of symmetry energy over the density ranging from 0.2$ρ_0$ to 0.57$ρ_0$ are obtained, and the values of symmetry energy at the starting and ending density region are $S(ρ=0.2ρ_0)=10.5\pm 0.63$ MeV and $S(ρ=0.57ρ_0)=23.1\pm 0.4$ MeV. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_19039 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Constraining the nuclear symmetry energy from electric dipole polarizability and neutron skin in $^{208}\mathrm{Pb}$ within antisymmetrized molecular dynamics Niu, Dandan Wang, Xinyu Cui, Ying Zhao, Qiang Zhao, Kai Ono, Akira Zhang, Yingxun Nuclear Theory Nuclear Experiment The electric dipole polarizability $α_D$ and the neutron skin thickness $ΔR_{np}$ of $^{208}\mathrm{Pb}$ are two powerful and clean probes to constrain the symmetry energy at subsaturation density. Within the framework of the antisymmetrized molecular dynamics (AMD) model, we found that the sensitive densities of $α_D$ and $ΔR_{np}$ ranges from the 0.2$ρ_0$ to 0.57$ρ_0$. To well describe the data of $α_D$ and $ΔR_{np}$, the effective interaction parameters with $S_0\sim34$ MeV and $L=66-75$ MeV are favored. The constraints of symmetry energy over the density ranging from 0.2$ρ_0$ to 0.57$ρ_0$ are obtained, and the values of symmetry energy at the starting and ending density region are $S(ρ=0.2ρ_0)=10.5\pm 0.63$ MeV and $S(ρ=0.57ρ_0)=23.1\pm 0.4$ MeV. |
| title | Constraining the nuclear symmetry energy from electric dipole polarizability and neutron skin in $^{208}\mathrm{Pb}$ within antisymmetrized molecular dynamics |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2602.19039 |