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Accession Number DE2012-1042669
Title Cosmological Imprints of a Generalized Chaplygin Gas Model for the Early Universe.
Publication Date Jun 2012
Media Count 10p
Personal Author M. Bouhmadi-Lopez P. Chen Y. W. Liu
Abstract 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.
Keywords Astrophysics
Cosmology
Frequencies
Gravitational waves
Phenomenology
Scalars
Spectra
Universe

 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 46 - Physics
54C - Astrophysics
Corporate Author National Accelerator Lab., Batavia, IL.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1226
Contract Number DE-AC02-76SF00515

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