Higher-order generalized uncertainty principle applied to gravitational baryogenesis

被引：7

作者：

Feng, Zhong-Wen ^{[1
]}

Zhou, Xia ^{[1
]}

Zhou, Shi-Qi ^{[2
]}

机构：

[1] China West Normal Univ, Phys & Space Sci Coll, Shida Rd 1, Nanchong 637009, Peoples R China

[2] Sun Yat Sen Univ, Sch Phys & Astron, Daxue Rd 2, Zhuhai 519082, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2022年 / 06期

基金：

中国国家自然科学基金;

关键词：

quantum gravity phenomenology; baryon asymmetry; modified gravity; MINIMAL LENGTH UNCERTAINTY; QUANTUM-GRAVITY; GUP;

D O I：

10.1088/1475-7516/2022/06/022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The gravitational baryogenesis plays an important role in the study of baryon asymmetry. However, the original mechanism of gravitational baryogenesis in the radiation-dominated era leads to the asymmetry factor eta equal to zero, which indicates this mechanism may not generate a sufficient baryon asymmetry in the early Universe. In this paper, we investigate the gravitational baryogenesis for the generation of baryon asymmetry in the early Universe by using a new higher-order generalized uncertainty principle (GUP). It is demonstrated that the entropy and the Friedman equation of the Universe deviate from the original cases due to the effect of the higher-order GUP. Those modifications break the thermal equilibrium of the Universe, and in turn produce a non-zero asymmetry factor eta. In particular, our results satisfy all of Sakharov's conditions, which indicates that the scheme of explaining baryon asymmetry in the framework of higher-order GUP is feasible. In addition, combining our theoretical results with the observational data, we constraint the GUP parameter beta(0), whose bound is between 8.4 x 10(10) similar to 1.1 x 10(13).

引用

页数：16

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