Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-03-15
JCAP 0408 (2004) 010
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, 1 figure, LaTeX2e
Scientific paper
10.1088/1475-7516/2004/08/010
We investigate cosmological dynamics of multiple tachyon fields with inverse square potentials. A phase-space analysis of the spatially flat FRW models shows that there exists power-law cosmological scaling solutions. We study the stability of the solutions and find that the potential-kinetic-scaling solution is a global attractor. However, in the presence of a barotropic fluid the solution is an attractor only in one region of the parameter space and the tracking solution is an attractor in the other region. We briefly discuss the physical consequences of these results.
Guo Zong-Kuan
Zhang Yuan-Zhong
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