540 citations · 4.5k across the 74 of their papers we have counts for
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hep-th2004★ 84 cited
K-Chameleon and the Coincidence Problem
Hao Wei, Rong-Gen Cai
In this paper we present a hybrid model of k-essence and chameleon, named as k-chameleon. In this model, due to the chameleon mechanism, the directly strong coupling between the k-…
hep-th2004★ 27 cited
Second-Order Corrections to the Power Spectrum in the Slow-Roll Expansion with a Time-Dependent Sound Speed
Hao Wei, Rong-Gen Cai, Anzhong Wang
We extend Green's function method developed by Stewart and Gong to calculate the power spectrum of density perturbation in the case with a time-dependent sound speed, and explicitl…