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Triple unification of inflation, dark energy, and dark matter in two-scalar-field cosmology
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A unified description of inflation, dark energy, and dark matter is presented within a two-scalar-field
cosmological model. Inflation, assumed to be of the warm type, is driven by one of the scalar fields, which,
shortly after the end of the inflationary period, decouples from radiation and begins to oscillate rapidly
around the minimum of its potential, thus behaving like cold dark matter; the second scalar field emerges, at
recent times, as the dominant component of the Universe, giving rise to a second era of accelerated
expansion. For certain values of the parameters of the model, the cosmological solutions arising in this
triple unification of inflation, dark energy, and dark matter are viable, reproducing the main features of the
evolution of the Universe.
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American Physical Society