145 citations · 1k across the 11 of their papers we have counts for
4 papers · 1 filter
Non-singular cosmology in a model of non-relativistic gravity
Yi-Fu Cai, Emmanuel N. Saridakis
We present a model of non-relativistic gravitational theory which is power-counting renormalizable in 3+1 dimensional spacetime. When applied to cosmology, the relativity-violation…
N-flation from multiple DBI type actions
Yi-Fu Cai, Wei Xue
In this letter we present a new N-flation model constructed by making use of multiple scalar fields which are being described by their own DBI action. We show that the dependence o…
Dark Energy Model with Spinor Matter and Its Quintom Scenario
Yi-Fu Cai, Jing Wang
A class of dynamical dark energy models, dubbed Spinor Quintom, can be constructed by a spinor field with a nontraditional potential. We find that, if choosing suitable potenti…
On Perturbations of Quintom Bounce
Yi-Fu Cai, Taotao Qiu, Robert Brandenberger +2
A Quintom universe with an equation-of-state crossing the cosmological constant boundary can provide a bouncing solution dubbed the Quintom Bounce and thus resolve the Big Bang sin…