Cosmological parameters in the noncommutative inflation

Abstract

We investigate how the uncertainty of noncommutative spacetime could explain the WMAP data. For this purpose, the spectrum is divided into the IR and UV region. We introduce a noncommutative parameter of ${\gamma }_0$ in the IR region and a noncommutative parameter of ${\mu }_0$ in the UV region. We calculate cosmological parameters using the slow-roll expansion in the UV region and a perturbation method in the IR region. The power-law inflation is chosen to obtain explicit forms for the power spectrum, spectral index, and running spectral index. Further, these are used to fit the data.

13 pages, version to appear in PLB

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Cited by in corpus (16)

• Noncommutative Geometry and Cosmology
• Thermodynamics and evaporation of the noncommutative black hole
• Noncommutative Conformally Coupled Scalar Field Cosmology and its Commutative Counterpart
• Aspects of Scalar Field Dynamics in Gauss-Bonnet Brane Worlds
• Inflation parameters from Gauss-Bonnet braneworld
• Gravitational Collapse of a Homogeneous Scalar Field in Deformed Phase Space
• Lamb shift and Stark effect in simultaneous space-space and momentum-momentum noncommutative quantum mechanics and $\theta$-deformed $su(2)$ algebra
• Noncommutative Black-Body Radiation: Implications On Cosmic Microwave Background
• Non-singular Brans-Dicke collapse in deformed phase space
• Black-Body Radiation Of Noncommutative Gauge Fields
• A Note on Noncommutative Brane Inflation
• Noncommutative KKLMMT Model
• Gauss-Bonnet braneworld and WMAP three year results
• Flow equations in generalized braneworld scenarios
• Tachyon and Quintessence Brane-World Universe
• Slow-roll reconstruction for running spectral index