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A dark energy model alternative to generalized Chaplygin gas
https://doi.org/10.1142/S0218271817501784Cited by:11 (Source: Crossref)
Abstract
By proposing a new cosmic fluid model of −1≤ω≤0 as an alternative to the generalized Chaplygin gas, we reexamine the role of Chaplygin gaslike fluid models in understanding dark energy and dark matter. Instead of as a unified dark matter, the fluid is suggested to be a mixture of unclustered dark energy and pressureless dark matter. Within such a scenario, the sub-horizon fluctuations of matter are stable and scale invariant, similar to those in standard ΛCDM model.
PACS: 98.80.Jk, 98.80.Cq, 11.25.Wx
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