Awad, AdelAdelAwadFarag Ali, AhmedAhmedFarag AliMajumder, BarunBarunMajumder2025-08-302025-08-302013-10-0110.1088/1475-7516/2013/10/0522-s2.0-84887758309https://d8.irins.org/handle/IITG2025/21141In 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 [9] 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.falsecosmology of theories beyond the SM | modified gravity | physics of the early universe | quantum gravity phenomenologyArticlehttps://arxiv.org/pdf/1308.434314757516October 201359052arJournal101