Entropy perturbations in quartessence Chaplygin models
classification
🌌 astro-ph
keywords
modelschaplyginentropyperturbationsquartessencebackgroundcompatiblecosmic
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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 (CMB) observations.
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