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Constraints on thawing scalar field models from fundamental constants
Qing Gao, Yungui Gong
We consider a dark energy model with a relation between the equation of state parameter and the energy density parameter derived from thawing scalar field models. Assumin…
Observational constraints on massive gravity
Yungui Gong
The ghost free massive gravity modified Friedmann equations at cosmic scale and provided an explanation of cosmic acceleration without dark energy. We analyzed the cosmological sol…
Cosmology in massive gravity
Yungui Gong
We argue that more cosmological solutions in massive gravity can be obtained if the metric tensor and the tensor defined by Stückelberg fields take the homogeneous and iso…
Causality Constraint on Noncritical Einstein-Weyl Gravity
Fu-Wen Shu, Yungui Gong
We explore, in the context of AdS/CFT correspondence, the causality constraints on the Noncritical Einstein-Weyl (NEW) gravity model in five dimensions. The scalar and shear channe…