49 citations · 172 across the 12 of their papers we have counts for
6 papers · 1 filter
Large Scale Suppression of Scalar Power on a Spatial Condensation
Seyen Kouwn, O-Kab Kwon, Phillial Oh
Suppression of the scalar power spectrum on large scales is one way to reconcile the tension between Planck and BICEP2 data. This suppression can occur by introducing a phase trans…
Cosmological Perturbations of a Quartet of Scalar Fields with a Spatially Constant Gradient
Seoktae Koh, Seyen Kouwn, O-Kab Kwon +1
We consider the linear perturbations for the single scalar field inflation model interacting with an additional triad of scalar fields. The background solutions of the three additi…
Dark spinor model with torsion and cosmology
Seyen Kouwn, Joohan Lee, Tae Hoon Lee +1
We study cosmological consequences of the dark spinor model when torsion is included. Only some components of the torsion are allowed to be non-vanishing in homogeneous and isotrop…
Exact solution and exotic fluid in cosmology
Seyen Kouwn, Taeyoon Moon, Phillial Oh
We investigate cosmological consequences of nonlinear sigma model coupled with a cosmological fluid which satisfies the continuity equation. The target space action is of de Sitter…
Dark Energy with Logarithmic Cosmological Fluid
Seyen Kouwn, Phillial Oh
We propose a dark energy model with a logarithmic cosmological fluid which can result in a very small current value of the dark energy density and avoid the coincidence problem wit…
Asymptotically Static Universe
Seyen Kouwn, Joohan Lee, Tae Hoon Lee +2
We consider a cosmology in which the final stage of the Universe is neither accelerating nor decelerating, but approaches an asymptotic state where the scale factor becomes a const…