322 citations
- Texas A&M UniversityUS20 papers
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6 papers · 1 filter
Late transient acceleration of the universe in string theory on
Qiang Wu, N. O. Santos, Pamela Vo +1
Recently, in Gong {\em et al} \cite{GWW07} and Wang and Santos \cite{WS07} it was shown that the effective cosmological constant on each of the two orbifold branes can be easily lo…
Dark energy and cosmic curvature: Monte-Carlo Markov Chain approach
Yungui Gong, Qiang Wu, Anzhong Wang
We use the Monte-Carlo Markov Chain method to explore the dark energy property and the cosmic curvature by fitting two popular dark energy parameterizations to the observational da…
Current constraints on interacting holographic dark energy
Qiang Wu, Yungui Gong, Anzhong Wang +1
Although there is mounting observational evidence that the cosmic expansion is undergoing a late-time acceleration, the physical mechanism behind such a phenomenon is yet unknown.…
Energy conditions and current acceleration of the universe
Yungui Gong, Anzhong Wang
The energy conditions provide a very promising model-independent study of the current acceleration of the universe. However, in order to connect these conditions with observations,…
Direct evidence of acceleration from distance modulus redshift graph
Yungui Gong, Anzhong Wang, Qiang Wu +1
The energy conditions give upper bounds on the luminosity distance. We apply these upper bounds to the 192 essence supernova Ia data to show that the Universe had experienced accel…
Reconstruction of the deceleration parameter and the equation of state of dark energy
Yungui Gong, Anzhong Wang
The new 182 gold supernova Ia data, the baryon acoustic oscillation measurement and the shift parameter determined from the Sloan Digital Sky Survey and the three-year Wilkinson Mi…