167 citations · 264 across the 8 of their papers we have counts for
8 papers
Late-time acceleration in the coupled Cubic Galileon models
Kyoung Yee Kim, Hyung Won Lee, Yun Soo Myung
We investigate the linearly and quadratically coupled cubic Galileon models that include linear potentials. These models may explain the late-time acceleration. In these cases, we…
Massive gravitons dark matter scenario revisited
Hyung Won Lee, Kyoung Yee Kim, Yun Soo Myung
We reexamine the massive graviton dark matter scenario (MGCDM) which was recently considered as an alternative to dark energy models. When introducing the native and effective equa…
Future cosmological evolution in gravity using two equations of state parameters
Hyung Won Lee, Kyoung Yee Kim, Yun Soo Myung
We investigate the issues of future oscillations around the phantom divide for gravity. For this purpose, we introduce two types of energy density and pressure arisen from t…
Equations of State in the Brans-Dicke cosmology
Hyung Won Lee, Kyoung Yee Kim, Yun Soo Myung
We investigate the Brans-Dicke (BD) theory with the potential as cosmological model to explain the present accelerating universe. In this work, we consider the BD field as a perfec…
On the Ricci dark energy model
Kyoung Yee Kim, Hyung Won Lee, Yun Soo Myung
We study the Ricci dark energy model (RDE) which was introduced as an alternative to the holographic dark energy model. We point out that an accelerating phase of the RDE is that o…
Density perturbations in decaying holographic dark energy models
Kyoung Yee Kim, Hyung Won Lee, Yun Soo Myung
We study cosmological perturbations in the context of an interacting dark energy model, where the holographic dark energy with IR cutoff decays into the cold dark matter (CDM). For…