论文标题
大爆炸核合成在不同的电子质量溶液到哈勃张力上的约束
Big Bang Nucleosynthesis constraints on varying electron mass solution to the Hubble tension
论文作者
论文摘要
具有时间变化的电子质量的宇宙学模型似乎是所谓的哈勃张力的有前途的解决方案。我们检查了时变的电子质量模型对大爆炸核合成（BBN）的约束，因为较大的电子质量会导致较小的中子衰变速率，这可能会影响光元素丰度。此外，不同的推断宇宙学参数（主要是重子不对称），以保持宇宙背景功率频谱不变，可能会影响光元素的丰度。我们发现，随着BBN时间的电子质量变大，预测的氦分数变大，氘的丰度变小。因此，我们得出的结论是，在BBN时间的可接受的电子质量仅比当前电子质量大约1％。
A cosmological model with a time-varying mass of electrons seems a promising solution for the so-called Hubble tension. We examine the big bang nucleosynthesis (BBN) constraints on the time-varying electron mass model, because a larger electron mass gives rise to the smaller neutron decay rate which could affect the light element abundance. Additionally, different inferred cosmological parameters, primarily baryon asymmetry, to keep the cosmic background power spectrum unchanged could affect the abundance of light element. We find that the predicted helium fraction becomes larger and the deuterium abundance becomes smaller as the electron mass at the BBN time becomes larger. Thus, we conclude that an acceptable electron mass at the BBN time would be only approximately 1% greater than the current electron mass.
