English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Assuming that neutrinos of non-zero rest mass dominate the mass density inthe universe, and also the mass density on the scale of clusters of galaxies,one obtains the upper limit m < 20 eV/c^2 on their mass, independent of thevalues of H_0 and q_0, and the lower limit m > 5 eV/c^2 independent of q_0 andalmost independent of H_0. If they are not to dominate the mass density on thescale of binary galaxies and small groups of galaxies, one must have m < 14eV/c2 independent of q0 and almost independent of H0. Going one step further,we allow neutrinos to have different gravitational and inertial masses so thatr = gravitational / inertial mass. Then using m for the inertial mass, we havem.r^1/4 > 5 eV/c^2, m.r^(1/4) < 14 eV/c^2 and m.r < 20 eV/c^2, which togetherimply r < 6.3. For a specific value, say, 12 eV/c^2, for m, we have 0.03 < r <1.7. Keywords: Neutrinos, rest mass, equivalence principle.

Neutrinos of non-zero rest mass and the equivalence principle