通过Nieh-Yan修正引力的Peccei-Quinn机制解强CP问题及其宇宙学意义
A solution of the strong CP problem via the Peccei-Quinn mechanism through the Nieh-Yan modified gravity and cosmological implications
摘要：
通过将最近引入的Barbero-Immirzi场与QCD轴子相鉴别，强CP问题可以通过Peccei-Quinn机制得到解决。Peccei-Quinn对称性破缺的一个特定的能量尺度自然地由这个模型预测。这提供了一个完整的动力学设置来评估这样一个轴子对宇宙冷暗物质含量的贡献。此外，原始引力波的张量-标量比产生的严格上限可以确定，这代表了对该模型的强有力的实验检验。
英文摘要：
By identifying the recently introduced Barbero-Immirzi field with the QCD axion, the strong CP problem can be solved through the Peccei-Quinn mechanism. A specific energy scale for the Peccei-Quinn symmetry breaking is naturally predicted by this model. This provides a complete dynamical setting to evaluate the contribution of such an axion to the cold dark matter content of the Universe. Furthermore, a tight upper bound on the tensor-to-scalar ratio production of primordial gravitational waves can be fixed, representing a strong experimental test for this model.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
