Finsler space-time can explain both parity asymmetry and power deficit seen in CMB temperature anisotropies
arXiv:1806.11425 · doi:10.1093/mnras/sty1689
Abstract
We propose a framework of Finsler space-time to explain the observed parity asymmetry and the power deficit in the low- () multipole range of cosmic microwave background (CMB) temperature anisotropies. In the dimensional space-time, the three-dimensional space is described by a Randers-Finsler space, which is spatially irreversible, inducing the parity asymmetry in the CMB angular power spectrum. We estimate the constraints on the two parameters introduced by Finsler space-time via analyzing the low- angular power spectrum in PLANCK 2015 CMB temperature data. We see that the low- power suppression in the CMB temperature anisotropies can also be resolved in this scenario. Our study shows that the two low- anomalies, i.e., parity asymmetry and power deficit, may have a common origin.
arXiv comment5 pages, 2 figures. Accepted for publication in MNRAS
References in corpus (38)
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- Planck 2015 results. XIII. Cosmological parameters
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
- Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness of parameters
- The axis of evil
- Planck 2015 results. XVI. Isotropy and statistics of the CMB
- Multipole Vectors--a new representation of the CMB sky and evidence for statistical anisotropy or non-Gaussianity at 2<=l<=8
- Hemispherical power asymmetry in the three-year Wilkinson Microwave Anisotropy Probe sky maps
- Is the Low CMB Quadrupole a Signature of Spatial Curvature?
- No large-angle correlations on the non-Galactic microwave sky
- Is the Universe odd?
- Anomalous parity asymmetry of the Wilkinson Microwave Anisotropy Probe power spectrum data at low multipoles
- Band Power Spectra in the COBE DMR 4-Year Anisotropy Maps
- Exact solution of vacuum field equation in Finsler spacetime
- Lack of large-angle TT correlations persists in WMAP and Planck
- Large-scale alignments from WMAP and Planck
- New constraints on Parity Symmetry from a re-analysis of the WMAP-7 low resolution power spectra
- Anomalous parity asymmetry of WMAP power spectrum data at low multpoles: is it cosmological or systematics?
- Alignment tests for low CMB multipoles
- Parity Asymmetry in the CMBR Temperature Power Spectrum
- Inflation with the Starobinsky potential in Loop Quantum Cosmology
- Directional dependence of CMB parity asymmetry
- A unified description for dipoles of the fine-structure constant and SnIa Hubble diagram in Finslerian universe
- Inflation and primordial power spectra at anisotropic spacetime inspired by Planck's constraints on isotropy of CMB
- Quadrupole--octopole alignment of CMB related to primordial power spectrum with dipolar modulation in anisotropic spacetime
- Searching for features of a string-inspired inflationary model with cosmological observations
- Testing the Dipole Modulation Model in CMBR
- Can residuals of the Solar system foreground explain low multipole anomalies of the CMB ?
- Relating the inhomogeneous power spectrum to the CMB hemispherical anisotropy
- Large-scale anomalies of the CMB in the curvaton scenario
- Primordial power spectrum of tensor perturbations in Finsler spacetime
- Noncommutative Geometry and the Primordial Dipolar Imaginary Power Spectrum
- Finslerian dipolar modulation of the CMB power spectra at scales
- Anisotropic power spectrum and the observed low-l power in PLANCK CMB data
- Negative Power Spectra in Quantum Field Theory
- Inflation in de Sitter spacetime and CMB large scales anomaly
- An Inflationary Scenario Taking into Account of Possible Dark Energy Effects in the Early Universe