Ghost Dark Energy In Rastall Theory

MODERN PHYSICS LETTERS A(2021)

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摘要
Making use of the generalized form of the Ghost dark energy density, which has the functional form rho(G) = f(H,H-2) where H represents the Hubble expanding rate, the present accelerated enlargement behavior of the cosmos is investigated from the Rastall theory perspective. After finding a relation for the Hubble cosmic expansion rate, we consider recent cosmology-independent measurements calculated for the expansion history of the cosmos to fit the model via the chi(2)-analysis. Moreover, we discuss the cosmographic properties of the model with the help of some cosmological quantities. We show that our model is stable and consistent with the recent astrophysical data. Also, for our model, we investigate cosmological interpretations of thermodynamics.
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关键词
Rastall theory, Ghost dark energy, thermodynamics
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