Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-01-28
Nucl.Phys. B550 (1999) 59-76
Physics
High Energy Physics
High Energy Physics - Phenomenology
20, Latex2e, 4 EPS figures, using epsfig; minor changes and some refs. added; to appear on Nucl. Phys. B
Scientific paper
10.1016/S0550-3213(99)00207-2
We discuss the structure of general Anisotropic Compactification in Type I D=4, N=1 string theory. It is emphasized that, in this context, a possible interpretation of M_{Planck} as ``dual'' to (at least) one of the Kaluza-Klein or Windings Modes could provide interesting interpretations of the ``physical scales'' and the GUT coupling. Some of the scenarios presented here are strictly connected with the phenomenological proposal of TeV-scale gravity (i.e. millimiter compactification). We show that in this scenario new and probably dominant effects should arise from the presence of ``low-energy'' Winding Modes of usual SM particles. Stringent bounds on the Planck mass in 4+n dimensions are derived from the existing experimental limits on massive replicas of SM gauge bosons. Non-observation of Winding Modes at the planned accelerators could provide stronger bounds on the 4+n dimensional Planck mass than those from graviton emission into the bulk. Some comments on other possible phenomenological interesting scenarios are addressed.
Donini Andrea
Rigolin Stefano
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