99 citations · 371 across the 23 of their papers we have counts for
4 papers · 1 filter
Higgs Inflation with a Gauss-Bonnet term
Seoktae Koh, Seong Chan Park, Gansukh Tumurtushaa
Higgs inflation with a Gauss-Bonnet term is studied in the Einstein frame. Our model features two coupling functions, and , coupled to the Ricci scalar and Gauss-Bon…
Existence of gradient CKV and gradient conformally stationary LRS spacetimes
Seoktae Koh, Abbas M Sherif, Gansukh Tumurtushaa
In this work, we study the existence of gradient (proper) CKVs in locally rotationally symmetric spacetimes (LRS), those CKVs in the space spanned by the tangent to observers' cong…
Dynamical Compactification with Matter
Kyung Kiu Kim, Seoktae Koh, Gansukh Tumurtushaa
In this work, we study cosmological solutions of the 8-dimensional Einstein Yang-Mills theory coupled to a perfect-fluid matter. A Yang-Mills instanton of extra dimensions causes a…
Wheeler-DeWitt equation beyond the cosmological horizon: Annihilation to nothing, infinity avoidance, and loss of quantum coherence
Chen-Hsu Chien, Gansukh Tumurtushaa, Dong-han Yeom
We investigate the Schwarzschild-(anti) de Sitter spacetime with the anisotropic metric ansatz. The Wheeler-DeWitt equation for such a metric is solved numerically. In the presence…