135 citations · 445 across the 12 of their papers we have counts for
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hep-th2014★ 2 cited
AdS cycles in eternally inflating background
Zhi-Guo Liu, Yun-Song Piao
In the eternally inflating background, the bubbles with AdS vacua will crunch. However, this crunch might be followed by a bounce. It is generally thought that the bubble universe…
hep-th2010★ 23 cited
Amplification of Curvature Perturbations in Cyclic Cosmology
Jun Zhang, Zhi-Guo Liu, Yun-Song Piao
We analytically and numerically show that through the cycles with nonsingular bounce the amplitude of curvature perturbation on large scale will be amplified and the power spectrum…