发表机构
Henan University; China West Normal University; Xinjiang University（河南大学; 西华师范大学; 新疆大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究通过联合拟合多种宇宙学探针数据，检验暗 sector 非线性相互作用约束对 Ia 型超新星绝对校准的鲁棒性，未发现支持该相互作用的有力证据。
AI 中文摘要
我们检验对非线性相互作用$\boldsymbol{\u03BE}$IDE 的约束是否在不同的 Ia 型超新星绝对校准处理下保持稳定。将 Fermi GRB 测量值与 Amati 关系参数，同 PantheonPlus SNe Ia、DESI DR2 BAO 及更新的宇宙计时仪汇编数据进行联合拟合。我们对比保留 SN 绝对校准的 PantheonPlus-SH0ES 路径，与对 SN 绝对星等进行解析边缘化的 PantheonPlus-only 路径。主分析采用 GOLD GRB 样本，同时使用 FULL GRB 样本评估样本依赖性。对于相互作用参数$\boldsymbol{\u03B3\u2261\u03BE+3w}$（其中$\boldsymbol{\u03B3=0}$表示非相互作用极限），GOLD 样本在 PantheonPlus-SH0ES 路径下给出$\boldsymbol{\u03B3=1.453^{+1.297}_{-1.597}}$，在 PantheonPlus-only 路径下给出$\boldsymbol{\u03B3=-0.634^{+1.668}_{-2.486}}$。尽管后验中位数对应相反的能量转移方向，但两种路径在 68% 可信度下均未排除$\boldsymbol{\u03B3=0}$，且在考虑的红移范围内，重建的相互作用率仍与零一致。将 GOLD 样本替换为 FULL 样本，对相互作用约束产生的变化可忽略不计。此外，$\boldsymbol{w}$CDM 和 CPL 实现的似然改善与$\boldsymbol{\u03BE}$IDE 相当，而信息准则并未一致支持相互作用模型。红移分箱诊断未发现 Amati 关系存在显著红移演化。我们未发现对 SN 校准选择具有鲁棒性、或相较于非相互作用暗能量扩展更受青睐的暗 sector 相互作用的有力证据。
英文摘要
We test whether constraints on the nonlinear interaction $ξ$IDE are stable under different treatments of the Type Ia supernovae absolute calibration. \textit{Fermi} GRBs measurements and the Amati-relation parameters are fitted jointly with PantheonPlus SNe Ia, DESI DR2 BAO, and an updated cosmic-chronometer compilation. We compare the PantheonPlus-SH0ES route, which retains the SN absolute calibration, with the PantheonPlus-only route, in which the SN absolute magnitude is analytically marginalized. The GOLD GRB sample is adopted for the main analysis, while the FULL GRB sample is used to assess sample dependence. For the interaction parameter $γ\equivξ+3w$, where $γ=0$ denotes the non-interacting limit, the GOLD sample gives $γ=1.453^{+1.297}_{-1.597}$ for the PantheonPlus-SH0ES and $γ=-0.634^{+1.668}_{-2.486}$ for the PantheonPlus-only. Although the posterior medians correspond to opposite directions of energy transfer, neither route excludes $γ=0$ at 68\% credibility, and the reconstructed interaction rate remains consistent with zero over the redshift range considered. Replacing the GOLD sample with the FULL sample produces negligible changes in the interaction constraints. Moreover, $w$CDM and CPL achieve likelihood improvements comparable to that of $ξ$IDE, while the information criteria do not consistently favor the interacting model. A redshift-bin diagnostic finds no significant redshift evolution of the Amati relation. We find no compelling evidence for a dark sector interaction that is robust to the choice of SN calibration or specifically favored over noninteracting dark energy extensions.
Comments20 pages, 6 figures
