An Infrared Cutoff Revealed by the Two Years of COBE Observations of Cosmic Temperature Fluctuations

1994/09/27 by Yipeng Jing, Yi-Peng Jing, Li-Zhi Fang +1 · 5 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1103/physrevlett.73.1882

published as Phys.Rev.Lett. 73 (1994) 1882-1885 · 11 pages, 4 figures (available upon request), Latex, AZPH-TH/94-5, to appera in Phys. Rev. Lett

arxiv created 1994/09/27 · openalex publication_date 1994/10/03 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We show that a good fitting to the first two years of observations by the Cosmic Background Explorer Differential Microwave Radiometers of the two-point angular correlation function of cosmic background radiation (CBR) temperature is given by models with a nonzero infrared cutoff k_min in the spectrum of the primordial density perturbations. If this cutoff comes from the finiteness of the universe, say, a topological T3 model, we find k_min\ensuremath∼(0.3\ensuremath-1.1)\ensuremathπ\fracH₀c with confidence level 95%. Such a nonzero k_min universe would also give a better match to the observations both of the rms quadrupole anisotropy of CBR and of galaxy clustering.

Cited by

• Suppressing the lower multipoles in the CMB anisotropies
• Features and new physical scales in primordial observables: Theory and observation
• Topology and Fragility in Cosmology
• Correlated hybrid fluctuations from inflation with thermal dissipation
• Stochastic inflation and the lower multipoles in the cosmic microwave background anisotropies