Vanishing dimensions: theory and phenomenology

Details Vanishing dimensions: theory and phenomenology Vanishing dimensions: theory and phenomenology

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.g9008s&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #G9.008

Physics

Scientific paper

Lower-dimensionality at higher energies has manifold theoretical advantages as recently pointed out in our work. Moreover, it appears that experimental evidence may already exists for it - a statistically significant planar alignment of events with energies higher than TeV has been observed in some earlier cosmic ray experiments. If this alignment is not a fluke, then the LHC should be able to see effects associated with the dimensional crossover. Further, (2+1)-dimensional spacetimes have no gravitational degrees of freedom, and gravity waves cannot be produced in that epoch in the early universe. This places a universal maximum frequency at which primordial gravity waves can propagate, which may be accessible to future gravitational wave detectors such as LISA. In this talk, the theoretical motivation for ``vanishing dimensions'' as well as generic experimental and observational signature will be discussed.

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