Cosmological Evolution of Dirac-Born-Infeld Field
Zong-Kuan Guo, Nobuyoshi Ohta
TL;DR
This paper studies the cosmological behavior of a Dirac-Born-Infeld field combined with a perfect fluid, focusing on the existence and stability of scaling solutions under specific conditions.
Contribution
It analyzes the existence and stability of scaling solutions for the Dirac-Born-Infeld field with particular potentials and fluid equations of state.
Findings
Scaling solutions exist for negative fluid equations of state.
Stable solutions are found in the ultra-relativistic limit.
Solutions are analyzed for AdS throat and quadratic potential.
Abstract
We investigate the cosmological evolution of the system of a Dirac-Born-Infeld field plus a perfect fluid. We analyze the existence and stability of scaling solutions for the AdS throat and the quadratic potential. We find that the scaling solutions exist when the equation of state of the perfect fluid is negative and in the ultra-relativistic limit.
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