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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The existing cosmological constraints on theories with large extra dimensionsrely on the thermal production of the Kaluza-Klein modes of gravitons andradions in the early Universe. Successful inflation and reheating, as well asbaryogenesis, typically requires the existence of a TeV-scale field in thebulk, most notably the inflaton. The non-thermal production of KK modes withmasses of order 100 GeV accompanying the inflaton decay sets the lower boundson the fundamental scale M_*. For a 1 TeV inflaton, the late decay of thesemodes distort the successful predictions of Big Bang Nucleosynthesis unlessM_*> 35, 13, 7, 5 and 3 TeV for 2, 3, 4, 5 and 6 extra dimensions,respectively. This improves the existing bounds from cosmology on M_* for 4, 5and 6 extra dimensions. Even more stringent bounds are derived for a heavierinflaton.Comment: 17 pages, latex, 4 figure

Cosmological bounds on large extra dimensions from nonthermal production of Kaluza-Klein modes