Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-03-10
Phys.Rev. D58 (1998) 084014
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, 4 figures, revtex, Some references are added. To be published in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.58.084014
We consider two-dimensional Brans-Dicke theory to study the initial singularity problem. It turns out that the initial curvature singularity can be finite for a certain Brans-Dicke constant $\omega$ by considering the quantum back reaction of the geometry. For $\omega=1$, the universe starts with the finite curvature scalar and evolves into the flat spacetime. Furthermore the divergent gravitational coupling at the initial time can be finite effectively with the help of quantum correction. The other type of universe is studied for the case of $0<\omega<1$.
Kim Won Tae
Yoon Myung Seok
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