55 citations · 151 across the 9 of their papers we have counts for
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astro-ph.CO2009★ 11 cited
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…
hep-ph2009★ 55 cited
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-…
astro-ph.CO2009★ 10 cited
The Slow-Roll and Rapid-Roll Conditions in the Space-like Vector Field Scenario
Yi Zhang
In this note we derive the slow-roll and rapid-roll conditions for the minimally and non-minimally coupled space-like vector fields. The function represents the non-mini…