Baryon Asymmetry Constraints on Extended Symmetric Teleparallel Gravity
Gravitation and Cosmology(2024)
摘要
We have explored the observed matter-antimatter asymmetry in the Universe to constrain the model parameters in Extended Symmetric Teleparallel Gravity (STG) or f(Q,T) gravity, where Q is the nonmetricity and T is the trace of the energy momentum tensor. We have considered two functional forms of f(Q,T) to find the baryon asymmetry to entropy ratio calculated at a decoupling temperature. Two different data sets, namely, the Hubble data set and the Hubble+BAO+Pantheon data set, are used to constrain the scale factor, and the constrained model is used to obtain the baryon asymmetry to entropy ratio. It is observed that the model constrained from the Hubble data set favors a narrow range of the f(Q,T) gravity parameters to reproduce the observed baryon asymmetry.
更多查看译文
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要