Powerlaw parametrized quintessence model
Abstract
We propose a simple powerlaw parametrized quintessence model with timevarying equation of state and obtain corresponding quintessence potential of this model. This model is compared with Supernova Type Ia (SNIa) Gold sample data, size of baryonic acoustic peak from Sloan Digital Sky Survey (SDSS), the position of the acoustic peak from the CMB observations and structure formation from the 2dFGRS survey and put constrain on the parameters of model. The parameters from the best fit indicates that the equation of state of this model at the present time is w{sub 0}=1.40{sub 0.65}{sup +0.40} at 1{sigma} confidence level. Finally we calculate the age of universe in this model and compare it with the age of old cosmological objects.
 Authors:
 Department of Physics, Sharif University of Technology, P.O. Box 113659161, Tehran (Iran, Islamic Republic of)
 (Iran, Islamic Republic of)
 Publication Date:
 OSTI Identifier:
 20935212
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevD.75.023512; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BARYONS; COSMOLOGICAL MODELS; EQUATIONS OF STATE; NONLUMINOUS MATTER; SUPERNOVAE; UNIVERSE
Citation Formats
Rahvar, Sohrab, Movahed, M. Sadegh, and Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 193955531, Tehran. Powerlaw parametrized quintessence model. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.023512.
Rahvar, Sohrab, Movahed, M. Sadegh, & Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 193955531, Tehran. Powerlaw parametrized quintessence model. United States. doi:10.1103/PHYSREVD.75.023512.
Rahvar, Sohrab, Movahed, M. Sadegh, and Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 193955531, Tehran. Mon .
"Powerlaw parametrized quintessence model". United States.
doi:10.1103/PHYSREVD.75.023512.
@article{osti_20935212,
title = {Powerlaw parametrized quintessence model},
author = {Rahvar, Sohrab and Movahed, M. Sadegh and Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 193955531, Tehran},
abstractNote = {We propose a simple powerlaw parametrized quintessence model with timevarying equation of state and obtain corresponding quintessence potential of this model. This model is compared with Supernova Type Ia (SNIa) Gold sample data, size of baryonic acoustic peak from Sloan Digital Sky Survey (SDSS), the position of the acoustic peak from the CMB observations and structure formation from the 2dFGRS survey and put constrain on the parameters of model. The parameters from the best fit indicates that the equation of state of this model at the present time is w{sub 0}=1.40{sub 0.65}{sup +0.40} at 1{sigma} confidence level. Finally we calculate the age of universe in this model and compare it with the age of old cosmological objects.},
doi = {10.1103/PHYSREVD.75.023512},
journal = {Physical Review. D, Particles Fields},
number = 2,
volume = 75,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}

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