Note on the Robustness of the Neutrino Mass Bounds from Cosmology

Abstract

The recent high precision maps of cosmic microwave anisotropies combined with measurements of the galaxy power spectrum from new large-scale redshift surveys have allowed stringent bounds on the sum of the neutrino masses to be placed. The past analyses, however, have implicitly assumed that the spectrum of primordial density fluctuations is adiabatic and coherent, as predicted in the simplest models of inflation. In this paper, we show that the limits hold even if the assumption on the primordial power spectrum is relaxed to allow for a contribution of nonadiabatic, incoherent fluctuations such as would be predicted by topological defects.

4 pages, to appear in Phys. Rev. D (R)

References in corpus (10)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
• How generic is cosmic string formation in SUSY GUTs
• The Production, Spectrum and Evolution of Cosmic Strings in Brane Inflation
• Observational Constraints on Cosmic String Production During Brane Inflation
• Neutrino masses and the number of neutrino species from WMAP and 2dFGRS
• Solar Neutrinos Before and After KamLAND
• A preference for a non-zero neutrino mass from cosmological data
• Cosmic String from D-term Inflation and Curvaton

Cited by in corpus (9)

• Probing oscillations into sterile neutrinos with cosmology, astrophysics and experiments
• Structure formation with strongly interacting neutrinos - implications for the cosmological neutrino mass bound
• Current cosmological bounds on neutrino masses and relativistic relics
• Sterile Neutrinos in Light of Recent Cosmological and Oscillation Data: a Multi-Flavor Scheme Approach
• Cosmological evolution of cosmic strings with time-dependent tension
• The Reactor Anomaly after Daya Bay and RENO
• Implications of cosmic strings with time-varying tension on CMB and large scale structure
• Effects of Cosmic Strings on Free Streaming
• Spectra of Relic Gravitons and Brans-Dicke Theory