Testing CPT Symmetry with CMB Measurements (2007)
Xia, Jun-Qing, Li, Hong, Wang, Xiulian, Zhang, Xinmin
In this paper we study the possibility of testing \emph{CPT} symmetry with Cosmic Microwave Background (CMB) measurements. Working with an effective lagrangian of the photon with \emph{CPT} violation...
Reconstructing large running-index inflaton potentials (2004)
Chen, Chiyi, Feng, Bo, Wang, Xiulian, Yang, Zhaoyu
Recent fits of cosmological parameters by the first year Wilkinson Microwave Anisotropy Probe (WMAP) measurement seem to favor a primordial scalar spectrum with a large varying index from blue to...
Dark Energy Constraints from the Cosmic Age and Supernova (2004)
Feng, Bo, Wang, Xiulian, Zhang, Xinmin
Using the low limit of cosmic ages from globular cluster and the white dwarfs: $t_0 > 12$Gyr, together with recent new high redshift supernova observations from the HST/GOODS program and previous...
Thermal leptogenesis in a model with mass varying neutrinos (2003)
Bi, Xiao-Jun, Gu, Peihong, Wang, Xiulian, Zhang, Xinmin
In this paper we consider the possibility of neutrino mass varying during the evolution of the Universe and study its implications on leptogenesis. Specifically, we take the minimal seesaw model of...
Dark Energy and Neutrino Mass Limits from Baryogenesis (2003)
Gu, Peihong, Wang, Xiulian, Zhang, Xinmin
In this brief report we consider couplings of the dark energy scalar, such as Quintessence to the neutrinos and discuss its implications in studies on the neutrino mass limits from Baryogenesis....
Feng, Bo, Gong, Xiaobo, Wang, Xiulian
The details of reheating energy scale $\rho_{reh}$ is largely uncertain today, independent of inflation models. This would induce uncertainty in predicting primordial spectrum. Such uncertainty could...
Natural Inflation, Planck Scale Physics and Oscillating Primordial Spectrum (2002)
Wang, Xiulian, Feng, Bo, Li, Mingzhe, Chen, Xue-Lei, Zhang, Xinmin
In the ``natural inflation'' model, the inflaton potential is periodic. We show that Planck scale physics may induce corrections to the inflaton potential, which is also periodic with a greater...
Quintessence and Spontaneous Leptogenesis (2001)
Li, Mingzhe, Wang, Xiulian, Feng, Bo, Zhang, Xinmin
We propose in this paper a scenario of spontaneous baryogenesis in cosmological models of Quintessence by introducing a derivative coupling of the Quintessence scalar $Q$ to the baryon current...