Abstract
The possible corrections to the entropy and Friedmann equations in the 4-dimensional Friedmann-Robertson-Walker (FRW) universe have been investigated within the generalized uncertainty principle (GUP), modified dispersion relation (MDR) and loop quantum gravity (LQG) separately. The corrected entropies stem from GUP, MDR and LQG analysis have been used separately to obtain the quantum gravitational corrections to the Friedmann equations in FRW universe. The explicit form of the corrections are worked out up to the sixth power of the Planck length. Through comparison of the corrections obtained from GUP, MDR and LQG approaches it is found that the results of these alternative approaches should be identical if one uses the suitable expansion coefficients.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
