Nonsingular rainbow universes

被引：109

作者：

Awad, Adel ^{[1
,2
,5
]}

Ali, Ahmed Farag ^{[1
,3
]}

Majumder, Barun ^{[4
]}

机构：

[1] Zewail City Sci & Technol, Ctr Theoret Phys, Giza 12588, Egypt

[2] Ain Shams Univ, Fac Sci, Dept Phys, Cairo 11566, Egypt

[3] Benha Univ, Fac Sci, Dept Phys, Banha 13518, Egypt

[4] Indian Inst Technol Gandhinagar, Ahmadabad 382424, Gujarat, India

[5] British Univ Egypt, Ctr Theoret Phys, Sherouk City 11837, Egypt

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2013年 / 10期

关键词：

modified gravity; quantum gravity phenomenology; physics of he early universe; cosmology of theories beyond the SM; QUANTUM-GRAVITY; LORENTZ-SYMMETRY; COSMIC-RAY; SCALE; SPACETIME; PARTICLES;

D O I：

10.1088/1475-7516/2013/10/052

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work, we study FRW cosmologies in the context of gravity rainbow. We discuss the general conditions for having a nonsingular FRW cosmology in gravity rainbow. We propose that gravity rainbow functions can be fixed using two known modified dispersion relation (MDR), which have been proposed in literature. The first MDR was introduced by Amelino-Camelia, et el. in and the second was introduced by Magueijo and Smolin in [24] Studying these FRW-like cosmologies, after fixing the gravity rainbow functions, leads to nonsingular solutions which can be expressed in exact forms.

引用

页数：12

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