Discrepancy between the measurements of Hubble constant H ₀ from the cosmic microwave background and the local distance ladder is the most serious challenge to the standard ΛCDM model. Recent research has pointed out that it might be related with the violation of cosmological principle. Here, we investigate the impact of dipole–monopole correction on the constraints of H ₀ utilizing the dipole-fitting method based on the ΛCDM model and cosmography method. Our results show that the dipole–monopole correction can reduce the constraints of H ₀ from a larger value consistent with SH0ES results to a smaller value consistent with Planck results. This finding can effectively alleviate the Hubble tension. Through making redshift tomography and model-independent analyses, we confirm that our findings are independent of the redshift and cosmological model. In addition, the theoretical prediction of H(z)/(1 + z) reconstructed by the constraints of the ΛCDM model with the dipole correction is in agreement with baryon acoustic oscillation (BAO) measurements, including five Dark Energy Spectroscopic Instrument BAOs within the 1σ range except a data point at z = 0.51. Our research suggests that the Hubble tension originates from new physics beyond the standard ΛCDM model, which might lead to a violation of the cosmological principle.

中文翻译：

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哈勃张力的新物理学暗示：违反宇宙学原理


来自宇宙微波背景的哈勃常数 H₀ 测量值与局部距离阶梯之间的差异是标准 ΛCDM 模型面临的最严峻挑战。最近的研究指出，这可能与违反宇宙学原理有关。在这里，我们利用基于 ΛCDM 模型和宇宙学方法的偶极子拟合方法研究了偶极子-单极子校正对 H₀ 约束的影响。我们的结果表明，偶极子-单极子校正可以将 H₀ 的约束从与 SH0ES 结果一致的较大值减少到与普朗克结果一致的较小值。这一发现可以有效地缓解哈勃紧张。通过进行红移断层扫描和独立于模型的分析，我们确认我们的发现独立于红移和宇宙学模型。此外，采用偶极子校正的 ΛCDM 模型约束重建的 H（z）/（1 + z） 的理论预测与重子声振荡 （BAO） 测量一致，包括 1σ 范围内的 5 个暗能量光谱仪 BAO，除了 z = 0.51 处的一个数据点。我们的研究表明，哈勃张力源于标准 ΛCDM 模型之外的新物理学，这可能导致违反宇宙学原理。