Planck-scale corrections to Friedmann equation

• Autorzy: Adel Awad , Ahmed Ali
• Języki publikacji: EN

Abstrakty

EN

Recently, Verlinde proposed that gravity is an emergent phenomenon which originates from an entropic force. In this work, we extend Verlinde’s proposal to accommodate generalized uncertainty principles (GUP), which are suggested by some approaches to quantum gravity such as string theory, black hole physics and doubly special relativity (DSR). Using Verlinde’s proposal and two known models of GUPs, we obtain modifications to Newton’s law of gravitation as well as the Friedmann equation. Our modification to the Friedmann equation includes higher powers of the Hubble parameter which is used to obtain a corresponding Raychaudhuri equation. Solving this equation, we obtain a leading Planck-scale correction to Friedmann-Robertson-Walker (FRW) solutions for the p = ωp equation of state.

Słowa kluczowe

EN

quantum gravity; entropic force; thermodynamics; black holes

• Czasopismo: Open Physics
• Rocznik: 2014
• Tom: 12
• Numer: 4
• Strony: 245-255

Daty

wydano

2014-04-01

online

2014-04-23

Twórcy

autor

Adel Awad,

autor

Ahmed Ali,

Bibliografia

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Identyfikatory

DOI

10.2478/s11534-014-0441-3