What question did this study set out to answer?

To analyze cosmologies with baryotropic fluids and scalar fields featuring exponential potentials and identify late-time attractors.

April 15, 1998CERN BulletinOpen Access

Exponential potentials and cosmological scaling solutions

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Phase-plane analysis reveals unique late-time attractors in cosmologies with scalar fields and baryotropic fluids.

To analyze cosmologies with baryotropic fluids and scalar fields featuring exponential potentials and identify late-time attractors.
Conducted phase-plane analysis of cosmologies with a baryotropic fluid and a scalar field with exponential potential.
Investigated conditions for scaling solutions and their stability based on energy densities.
Evaluated the implications of steepness of potential related to nucleosynthesis constraints.
Identified unique late-time attractors in scaling solutions for certain conditions (${\lambda}^{2}>3{\gamma}$).
Found fluid-dominated solutions are unstable, particularly when ${\lambda}^{2}<20$.
Demonstrated that standard inflation models cannot resolve the relic density problem.

Copeland et al. (1998) studied this question.

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