230 citations · 574 across the 6 of their papers we have counts for
7 papers
Comment on "Turnaround in Cyclic Cosmology"
Xin Zhang
We comment on a recent paper by L. Baum and P. H. Frampton [Phys. Rev. Lett. 98, 071301 (2007)] where it was argued that the entropy problem can be resolved in a peculiar cyclic un…
Holographic dark energy in a cyclic universe
Jingfei Zhang, Xin Zhang, Hongya Liu
In this paper we study the cosmological evolution of the holographic dark energy in a cyclic universe, generalizing the model of holographic dark energy proposed by Li. The hologra…
Possible theoretical limits on holographic quintessence from weak gravity conjecture
Yin-Zhe Ma, Xin Zhang
The holographic dark energy model is one of the important ways for dealing with the dark energy problems in the quantum gravity framework. In this model, the dimensionless paramete…
Holographic tachyon model
Jingfei Zhang, Xin Zhang, Hongya Liu
We propose in this Letter a holographic model of tachyon dark energy. A connection between the tachyon scalar-field and the holographic dark energy is established, and accordingly,…
Inflationary universe in loop quantum cosmology
Xin Zhang, Yi Ling
Loop quantum cosmology provides a nice solution of avoiding the big bang singularity through a big bounce mechanism in the high energy region. In loop quantum cosmology an inflatio…
Constraints on Holographic Dark Energy from Latest Supernovae, Galaxy Clustering, and Cosmic Microwave Background Anisotropy Observations
Xin Zhang, Feng-Quan Wu
The holographic dark energy model is proposed by Li as an attempt for probing the nature of dark energy within the framework of quantum gravity. The main characteristic of holograp…