12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Note on the robustness of the Neutrino Mass Bou...
View graph of relations

« Back

Note on the robustness of the Neutrino Mass Bounds from cosmology

Research output: Contribution to journalJournal article

Published

Article number081301(R)
Journal publication date29/01/2004
JournalPhysical Review D
Journal number8
Volume69
Number of pages4
Original languageEnglish

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.

Bibliographic note

© 2004 The American Physical Society