2009
DOI: 10.1088/1475-7516/2009/09/017
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Abstract: The Chaplygin gas (CG) and the generalized Chaplygin gas (GCG) models, proposed as candidates of the unified dark matter-dark energy (UDME), are tested with the look-back time (LT) redshift data. We find that the LT data only give a very weak constraint on the model parameter. However, by combing the LT with the baryonic acoustic oscillation peak, we obtain, at the 95.4% confidence level, 0.68 ≤ A c ≤ 0.82 and 0.59 ≤ h ≤ 0.65 for the CG model , and 0.67 ≤ A s ≤ 0.89 and −0.29 ≤ α ≤ 0.61 for the GCG model. This… Show more

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Cited by 21 publications
(11 citation statements)
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References 79 publications
(11 reference statements)
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“…As a competitive model to explain the lately accelerated expansion of universe, a unified dark fluid (UDF) model [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] was investigated extensively in the recent years. The striking features of the UDF model are that it combines cold dark matter and dark energy and that it behaves like the cold dark matter and the dark energy at an early epoch and a late time, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…As a competitive model to explain the lately accelerated expansion of universe, a unified dark fluid (UDF) model [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] was investigated extensively in the recent years. The striking features of the UDF model are that it combines cold dark matter and dark energy and that it behaves like the cold dark matter and the dark energy at an early epoch and a late time, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…Following this idea, it was considered the so-called generalized Chaplygin gas [8]. This model has been analyzed many times in the literature; see, for example, [9]. Subsequently, this model has been modified to include an initial phase of radiation and is called the modified Chaplygin gas (MCG).…”
Section: Introductionmentioning
confidence: 99%
“…If one treats the dark energy and dark matter as a unified dark fluid, the corresponding models have been put for-ward and studied in Kunz (2009), Capozziello et al (2006), Hipolito-Ricaldi et al (2010), Ananda & Bruni (2006), Balbi et al (2006), Xu et al (2011Xu et al ( , 2012a, Kamenshchik et al (2001), Barrow (1988), Bento et al (2002Bento et al ( , 2004, Barreiro et al (2008), Li et al (2009), Wu & Yu (2007), Park et al (2010), Liang et al (2011), Xu (2013a,b), Li & Xu (2014a,b), Lu et al (2008), Xu & Lu (2010), Aviles & Cervantes-Cota (2011), Luongo & Quevedo (2012), Camera et al (2009Camera et al ( , 2011, Bertacca et al (2008), Yang & Xu (2013), Bruni et al (2013), Piattella et al (2010), Benaoum (2002), , Bilic et al (2004), Beca & Avelino (2007), Avelino et al (2004Avelino et al ( , 2008Avelino et al ( , 2014, Beca et al (2003), .…”
Section: Introductionmentioning
confidence: 99%
“…In these unified dark fluid models, the Chaplygin gas (CG) and its generalized models have been widely studied in order to explain the accelerating universe in Kamenshchik et al (2001), Barrow (1988), Bento et al (2002Bento et al ( , 2004, Barreiro et al (2008), Li et al (2009), Wu & Yu (2007), Park et al (2010), Xu et al (2011Xu et al ( , 2012b, Liang et al (2011), Xu (2013a,b), Li & Xu (2014a,b), Lu et al (2008), Xu & Lu (2010), Benaoum (2002), , Bilic et al (2004), Avelino et al (2004Avelino et al ( , 2008Avelino et al ( , 2014, Beca & Avelino (2007), Beca et al (2003), . The most interesting property for this kind of scenarios is that two unknown dark sections-dark energy and dark matter can be unified by using an exotic equation of state.…”
Section: Introductionmentioning
confidence: 99%