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Accession Number
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DE2012-1042669
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Title
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Cosmological Imprints of a Generalized Chaplygin Gas Model for the Early Universe.
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Publication Date
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Jun 2012
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Media Count
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10p
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Personal Author
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M. Bouhmadi-Lopez P. Chen Y. W. Liu
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Abstract
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We propose a phenomenological model for the early universe where there is a smooth transition between an early quintessence phase and a radiation-dominated era. The matter content is modeled by an appropriately modified Chaplygin gas for the early universe. We constrain the model observationally by mapping the primordial power spectrum of the scalar perturbations to the latest data of WMAP7. We compute as well the spectrum of the primordial gravitational waves as would be measured today. We show that the high frequencies region of the spectrum depends on the free parameter of the model and most importantly this region of the spectrum can be within the reach of future gravitational waves detectors.
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Keywords
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Astrophysics
Cosmology
Frequencies
Gravitational waves
Phenomenology
Scalars
Spectra
Universe
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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46 - Physics
54C - Astrophysics
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Corporate Author
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National Accelerator Lab., Batavia, IL.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1226
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Contract Number
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DE-AC02-76SF00515
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