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Noether Symmetry Approach in "Cosmic Triad" Vector Field Scenario
Yi Zhang, Yun-gui Gong, Zong-Hong Zhu
To realize the accelerations in the early and late periods of our universe, we need to specify potentials for the dominant fields. In this paper, by using the Noether symmetry appr…
The dynamical behavior of the Extended Holographic Dark Energy with Hubble Horizon
Jie Liu, Yungui Gong, Ximing Chen
The extended holographic dark energy model with the Hubble horizon as the infrared cutoff avoids the problem of the circular reasoning of the holographic dark energy model. Unfortu…
Noether Symmetry Approach in multiple scalar fields Scenario
Yi Zhang, Yun-gui Gong, Zong-Hong Zhu
In this Letter, we find suitable potentials in the multiple scalar fields scenario by using the Noether symmetry approach. We discussed three models with multiple scalar fields: N-…
Observational constraint on dynamical evolution of dark energy
Yungui Gong, Rong-Gen Cai, Yun Chen +1
We use the Constitution supernova, the baryon acoustic oscillation, the cosmic microwave background, and the Hubble parameter data to analyze the evolution property of dark energy.…
A Modified Holographic Dark Energy Model with Infrared Infinite Extra Dimension(s)
Yungui Gong, Tianjun Li
We propose a modified holographic dark energy (MHDE) model with the Hubble scale as the infrared (IR) cutoff. Introducing the infinite extra dimension(s) at very large distance sca…