Accelerating cosmologies tested by distance measures
作者： V. Barger , Y. Gao , D. Marfatia
DOI: 10.1016/J.PHYSLETB.2007.03.021
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摘要: Abstract We test if the latest Gold set of 182 SNIa or combined “Platinum” 192 from ESSENCE and sets, in conjunction with CMB shift parameter show a preference between Λ CDM model, three w models, DGP model modified gravity as an explanation for current accelerating phase universe's expansion. consider flat models equation state ( ) that is (i) constant scale factor , (ii) varies 0 + 1 − redshifts probed by supernovae but fixed at −1 earlier epochs (iii) since recombination. find all five explain data comparable success.
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