New Directions for New Dimensions: From Strings to Neutrinos to Axions to...

Details New Directions for New Dimensions: From Strings to Neutrinos to Axions to... New Directions for New Dimensions: From Strings to Neutrinos to Axions to...

2000-04-13

arxiv.org/abs/hep-ph/0004129v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX, 4 figures. Invited plenary talk given at PASCOS '99 (held at Lake Tahoe, California, 10-16 December 1999). To

Scientific paper

In this talk, I discuss recent developments concerning the possibility of large extra spacetime dimensions. After briefly reviewing how such dimensions can lower the fundamental GUT, Planck, and string scales, I then outline how these scenarios lead to a new higher-dimensional seesaw mechanism for generating neutrino oscillations --- perhaps even without neutrino masses. I also discuss how extra dimensions lead to new mechanisms contributing to the ``invisibility'' of the QCD axion. This talk reports on work done in collaboration with Emilian Dudas and Tony Gherghetta.

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