Observational limits on the time evolution of extra spatial dimensions

Details Observational limits on the time evolution of extra spatial dimensions Observational limits on the time evolution of extra spatial dimensions

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvd..35.1805b&link_type=abstract

Physical Review D (Particles and Fields), Volume 35, Issue 6, 15 March 1987, pp.1805-1810

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122

Field Theories In Dimensions Other Than Four, Elementary Particle Processes

Scientific paper

Limits are imposed upon the possible rate of change of extra spatial dimensions in Kaluza-Klein and superstring theories by considering the consequences of such changes for primordial nucleosynthesis and the positioning of nuclear resonance levels in samarium, carbon, and oxygen. Previous limits from nucleosynthesis had not included strong-interaction effects. The strongest limits constrain the present rate of change of the mean radius of any additional spatial dimensions to be less than about 10-19 yr-1.

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