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astro-ph2005
Comment on "On curvature coupling and quintessence fine-tuning"
Urbano Franca
In this comment, we show explicitly that the phenomenological model in which the quintessence field depends linearly on the energy density of the spatial curvature can provide acce…
astro-ph2005
Dark energy, curvature, and cosmic coincidence
Urbano Franca
The fact that the energy densities of dark energy and matter are similar currently, known as the coincidence problem, is one of the main unsolved problems of cosmology. We present…