867 citations · 1.9k across the 14 of their papers we have counts for
14 papers
Entropic cosmology: a unified model of inflation and late-time acceleration
Yi-Fu Cai, Jie Liu, Hong Li
Holography is expected as one of the promising descriptions of quantum general relativity. We present a model for a cosmological system involving two holographic screens and find t…
Rotating a Curvaton Brane in a Warped Throat
Jun Zhang, Yi-Fu Cai, Yun-Song Piao
In this paper we study a curvaton model obtained by considering a probe anti-D3-brane with angular motion at the bottom of a KS throat with approximate isometries. We calculate the…
Quintom Cosmology: Theoretical implications and observations
Yi-Fu Cai, Emmanuel N. Saridakis, Mohammad R. Setare +1
We review the paradigm of quintom cosmology. This scenario is motivated by the observational indications that the equation of state of dark energy across the cosmological constant…
Primordial perturbation with a modified dispersion relation
Yi-Fu Cai, Xinmin Zhang
In this paper we study the generation of primordial perturbation with a modified dispersion relation in various cosmological evolutions. We stress that the formation of the power s…
Inflation with multiple sound speeds: a model of multiple DBI type actions and non-Gaussianities
Yi-Fu Cai, Hai-Ying Xia
In this letter we study adiabatic and isocurvature perturbations in the frame of inflation with multiple sound speeds involved. We suggest this scenario can be realized by a number…
Thermal Fluctuations and Bouncing Cosmologies
Yi-Fu Cai, Wei Xue, Robert Brandenberger +1
We study the conditions under which thermal fluctuations generated in the contracting phase of a non-singular bouncing cosmology can lead to a scale-invariant spectrum of cosmologi…