67 citations · 167 across the 16 of their papers we have counts for
3 papers · 1 filter
Big Bounce Genesis
Changhong Li, Robert H. Brandenberger, Yeuk-Kwan E. Cheung
We report on the possibility to use dark matter particle's mass and its cross section as a smoking gun signal of the existence of a Big Bounce at the early stage in the evolution o…
The Scale-invariant Power Spectrum of Primordial Curvature Perturbation in CSTB Cosmos
Changhong Li, Yeuk-Kwan E. Cheung
We investigate the spectrum of cosmological perturbations in a bounce cosmos modeled by a scalar field coupled to the string tachyon field (CSTB cosmos). By explicit computation of…
Bound to bounce: a coupled scalar-tachyon model for a smooth bouncing/cyclic universe
Changhong Li, Lingfei Wang, Yeuk-Kwan E. Cheung
We introduce a string-inspired model for a bouncing/cyclic universe, utilizing the scalar-tachyon coupling as well as contribution from curvature in a closed universe. The universe…