360 citations · 2.1k across the 55 of their papers we have counts for
56 papers
Variable-Speed-of-Light Cosmology and Second Law of Thermodynamics
Donam Youm
We examine whether the cosmologies with varying speed of light (VSL) are compatible with the second law of thermodynamics. We find that the VSL cosmology with varying fundamental c…
A Note on the Cardy-Verlinde Formula
Donam Youm
We generalize the results of hep-th/0008140 to the case of the (n+1)-dimensional closed FRW universe satisfying a general equation of state of the form p=wρ. We find that the entro…
A Varying-e Brane World Cosmology
Donam Youm
We study a varying electric charge brane world cosmology in the RS2 model obtained from a varying-speed-of-light brane world cosmology by redefining the system of units. We elabora…
The Cardy-Verlinde Formula and Asymptotically de Sitter Brane Universe
Donam Youm
We consider the brane universe in the bulk background of the topological AdS-Schwarzschild black holes, where the brane tension takes larger value than the fine-tunned value. The r…
Null Geodesics in Brane World Universe
Donam Youm
We study null bulk geodesic motion in the brane world cosmology in the RS2 scenario and in the static universe in the bulk of the charged topological AdS black hole. We obtain equa…
A Varying-alpha Brane World Cosmology
Donam Youm
We study the brane world cosmology in the RS2 model where the electric charge varies with time in the manner described by the varying fine-structure constant theory of Bekenstein.…