Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-01-29
JCAP 0407 (2004) 010
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX, 15 pages, 1 figure, published version
Scientific paper
10.1088/1475-7516/2004/07/010
We present a unified model of dark matter and dark energy. The dark matter field is a modulus corresponding to a flat direction of supersymmetry, which couples, in a hybrid type potential, with the dark energy field. The latter is a light scalar, whose direction is stabilized by non-renormalizable terms. This quintessence field is kept `locked' on top of a false vacuum due to the coupling with the oscillating dark matter field. It is shown that the model can satisfy the observations when we consider low-scale gauge-mediated supersymmetry breaking. The necessary initial conditions are naturally attained by the action of supergravity corrections on the potential, in the period following the end of primordial inflation.
Axenides Minos
Dimopoulos Konstantinos
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