Song-Shan Luo, Qing-Quan Jiang, Zhong-Wen Feng, Xia Zhou, Xue-Lin Mu
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引用次数: 0
Abstract
The generalized uncertainty principle (GUP), as a key model in quantum gravity, is crucial for exploring cosmological properties and related challenges. In this paper, we investigate the effects of a higher-order GUP on primordial Big Bang nucleosynthesis (BBN). First, using a new higher-order GUP, we derive the modified Friedmann equations and the corresponding thermodynamic properties of the universe within the quantum gravity framework. Next, we analyze BBN under these modifications. Finally, by incorporating observational data of BBN and the primordial light element abundances, respectively, we establish constraints on the GUP parameter. The results reveal a significant impact of the GUP on the BBN processes in the early universe. Notably, the GUP parameter is found to take both positive and negative values, which is different from the classical case.
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