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Note on the robustness of the neutrino mass bounds from cosmology

Robert H. Brandenberger, Anupam Mazumdar, and Masahide Yamaguchi
Phys. Rev. D 69, 081301(R) – Published 16 April 2004
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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.

  • Received 29 January 2004

DOI:https://doi.org/10.1103/PhysRevD.69.081301

©2004 American Physical Society

Authors & Affiliations

Robert H. Brandenberger*

  • Department of Physics, Brown University, Providence, Rhode Island 02912, USA
  • Perimeter Institute for Theoretical Physics, Waterloo, Canada N2J 2W9

Anupam Mazumdar

  • Department of Physics, McGill University, Montréal, Québec, Canada H3A 2T8

Masahide Yamaguchi

  • Department of Physics, Brown University, Providence, Rhode Island 02912, USA

  • *Email address: rhb@het.brown.edu
  • Email address: anupamm@hep.physics.mcgill.ca
  • Email address: gucci@het.brown.edu

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Vol. 69, Iss. 8 — 15 April 2004

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