2005Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fieldsOpen access

Coupling quintessence to inflation in supergravity

Philippe Brax, Jérôme Martin

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Abstract

The evolution of the quintessence field during a phase of chaotic inflation is studied. The inflaton $\ensuremath{\phi}$ and the quintesssence field $Q$ are described in a supergravity framework where the coupling between the inflaton and quintessence is induced by nonrenormalizable operators suppressed by the Planck mass. We show that the resulting quintessence potential during inflation possesses a time-dependent minimum playing the role of an attractor. The presence of this attractor forces the quintessence field to be small during inflation. These initial conditions are such that the quintessence field is on track now.

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The evolution of the quintessence field during a phase of chaotic inflation is studied. The inflaton $\ensuremath{\phi}$ and the quintesssence field $Q$ are described in a supergravity framework where the coupling between the inflaton and quintessence is induced by nonrenormalizable operators suppressed by the Planck mass. We show that the resulting quintessence potential during inflation possesses a time-dependent minimum playing the role of an attractor. The presence of this attractor forces the quintessence field to be small during inflation. These initial conditions are such that the quintessence field is on track now.

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Available abstract

The evolution of the quintessence field during a phase of chaotic inflation is studied. The inflaton $\ensuremath{\phi}$ and the quintesssence field $Q$ are described in a supergravity framework where the coupling between the inflaton and quintessence is induced by nonrenormalizable operators suppressed by the Planck mass. We show that the resulting quintessence potential during inflation possesses a time-dependent minimum playing the role of an attractor. The presence of this attractor forces the quintessence field to be small during inflation. These initial conditions are such that the quintessence field is on track now.

Key concepts: Quintessence, Inflaton, Supergravity, Physics, Inflation (cosmology), Attractor, Coupling (piping), Theoretical physics

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