2008/06/15 by Earnest Akofor, A. P. Balachandran, Anosh Joseph +4
Physics and Astronomy · #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #Particle physics theoretical and experimental studies #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.79.063004
published as Phys.Rev.D79:063004,2009 · 15 pages, 6 figures
arxiv created 2008/06/15 · openalex publication_date 2009/03/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We try to constrain the noncommutativity length scale of the theoretical model given in [E. Akofor, A. P. Balachandran, S. G. Jo, A. Joseph, and B. A. Qureshi, J. High Energy Phys. 05 (2008) 092.] using the observational data from ACBAR, CBI and 5 yr WMAP. ACBAR and CBI data restrict the lower bound of the noncommutativity energy scale to be around 10 TeV. We also derive an expression for the amount of noncausality coming from spacetime noncommutativity for the fields of primordial scalar perturbations that are spacelike separated.