Geometrical Diagnostics for Generalized Chaplygin Gas

Abstract

A new diagnostic method, $Om$ is applied to generalized Chaplygin gas (GCG) model as the unification of dark matter and dark energy. On the basis of the recently observed data: the Union supernovae, the observational Hubble data, the SDSS baryon acoustic peak and the five-year WMAP shift parameter, we show the discriminations between GCG and $\Lambda$CDM model. Furthermore, it is calculated that the current equation of state of dark energy $w_{0de}=-0.964$ according to GCG model.

References in corpus (20)

• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• Reconstructing Dark Energy
• Two new diagnostics of dark energy
• A Dark Energy Model Characterized by the Age of the Universe
• Holographic Chaplygin gas model
• A parametric model for dark energy
• Interacting Holographic Phantom
• Cosmological Constraints from Hubble Parameter versus Redshift Data
• A litmus test for Lambda
• Constraints on modified Chaplygin gas from recent observations and a comparison of its status with other models
• Observational $H(z)$ Data and Cosmological Models
• Generalized Chaplygin gas model: constraints from Hubble parameter versus Redshift Data
• Constraints on holographic dark energy models using the differential ages of passively evolving galaxies
• Current constraints on interacting holographic dark energy
• Statefinder diagnostic for Yang-Mills dark energy model
• New Constraints on the Variable Equation of State Parameter from X-Ray Gas Mass Fractions and SNe Ia
• Constraints on accelerating universe using ESSENCE and Gold supernovae data combined with other cosmological probes
• Cosmic Acceleration and Modified Gravity
• Viscous Modified Gravity on a RS Brane Embedded in AdS5
• A Null Test of the Cosmological Constant

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