2010/07/28 by Koichi Hirano, Hirano, Koichi, Kiyoshi Kawabata +5
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #astro-ph.CO #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.1007.4881
2 pages, 3 figures, Proceedings of 59th Yamada Conference "Inflating Horizons of Particle Astrophysics and Cosmology", Universal Academy Press (2006), p.219
arxiv created 2010/07/28 · arxiv updated 2010/07/29
We investigate whether or nor it is possible to find a scalar field model or models that are capable of explaining simultaneously the observed N-z relation given by the 2dF Galaxy Redshift Survey, which still seems to exhibit a spatial periodicity of the galaxy distribution(the 'picket-fence structure'), and the CMB spectrum obtained by the WMAP experiments. It is found that both the observed size of the spatial periodicity and the amplitude of the 2dF N-z relation can be fairly well fitted by the theoretical computations based on the scalar field models with -20≤ ξ≤ -10, and 140≤ m\rm s ≤ 160, where ξ is the gravitational coupling parameter, and m\rm s the normalized mass of the scalar field, respectively. To reproduce the CMB spectrum of the WMAP, we find that it is very crucial to have a null state of the scalar field in the early epochs of evolution of the universe.