Journal
PHYSICAL REVIEW D
Volume 68, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.68.061302
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We show that entropy perturbations can eliminate instabilities and oscillations in the mass power spectrum of the quartessence Chaplygin models. Our results enlarge the current parameter space of models compatible with large-scale structure and cosmic microwave background observations.
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