91 citations · 418 across the 28 of their papers we have counts for
28 papers
The solar system mimics a hydrogen atom
Je-An Gu
The solar system and the hydrogen atom are two well known systems on different scales and look unrelated: The former is a classical system on the scale of about billions of kilomet…
Acausality and Nonunique Evolution in Generalized Teleparallel Gravity
Keisuke Izumi, Je-An Gu, Yen Chin Ong
We show the existence of physical superluminal modes and acausality in the Brans-Dicke type of extension of teleparallel gravity that includes F(T) gravity and teleparallel dark en…
Singularity Problem in Teleparallel Dark Energy Models
Chao-Qiang Geng, Je-An Gu, Chung-Chi Lee
We study future singularity in teleparallel dark energy models, particularly its behavior and its (non)occurrence in the observationally viable models. For the models with a genera…
de Sitter Radiation and Backreaction in Quantum Cosmology
Je-An Gu, Sang Pyo Kim, Che-Min Shen
We explore the quantum cosmology description of the de Sitter (dS) radiation and its backreaction to dS space, inherent in the wave function of the Wheeler-DeWitt equation for pure…
Teleparallel Dark Energy with Purely Non-minimal Coupling to Gravity
Je-An Gu, Chung-Chi Lee, Chao-Qiang Geng
We propose the simplest model of teleparallel dark energy with purely a non-minimal coupling to gravity but no self-potential, a single model possessing various interesting feature…
The Early-Time Evolution of the Cosmological Perturbations in f(R) Gravity
Je-An Gu, Tse-Chun Wang, Yen-Ting Wu +2
We investigate the evolution of the linear cosmological perturbations in f(R) gravity, an alternative to dark energy for explaining the late-time cosmic acceleration. We numericall…