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Modified Chaplygin gas cosmology. (English) Zbl 1263.83077
Summary: Modified Chaplygin gas as an exotic fluid has been introduced by H. B. Benaoum (2002). Essential features of the modified Chaplygin gas as a cosmological model are discussed. Observational constraints on the parameters of the model have been included. The relationship between the modified Chaplygin gas and a homogeneous minimally coupled scalar field is reevaluated by constructing its self-interacting potential. In addition, we study the role of the tachyonic field in the modified Chaplygin gas cosmological model and the mapping between scalar field and tachyonic field is also considered.

MSC:
83C55Macroscopic interaction of the gravitational field with matter (general relativity)
83F05Relativistic cosmology
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