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Shape versus volume: making large flat extra dimensions invisible.

Keith R Dienes1

  • 1Department of Physics, University of Arizona, Tucson, Arizona 85721.

Physical Review Letters
|January 22, 2002
PubMed
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Shape moduli significantly impact Kaluza-Klein spectra in large extra dimensions, altering mass gaps and interpolating between theories. This research alleviates experimental bounds on extra spacetime dimensions.

Area of Science:

  • Theoretical Physics
  • High Energy Physics
  • String Theory

Background:

  • Large extra dimensions are a key feature in some theories beyond the Standard Model.
  • Kaluza-Klein (KK) spectra are crucial for understanding the phenomenology of extra dimensions.
  • Experimental bounds currently constrain theories with large extra spacetime dimensions.

Purpose of the Study:

  • To investigate the influence of shape moduli on Kaluza-Klein spectra.
  • To explore how shape moduli affect theoretical predictions for extra dimensions.
  • To identify mechanisms for alleviating experimental constraints on large extra dimension theories.

Main Methods:

  • Analysis of theoretical models with large extra dimensions.
  • Investigation of the role of shape moduli in Kaluza-Klein theory.

Related Experiment Videos

  • Mathematical modeling of Kaluza-Klein spectra and Planck scale relationships.

    • Main Results:

    • Shape moduli dramatically affect Kaluza-Klein spectra.
    • Shape moduli can alter the mass gap and induce level crossings.
    • It is possible to increase the Kaluza-Klein graviton mass gap while maintaining Planck scale ratios.

    Conclusions:

    • Shape moduli offer a powerful tool for tuning Kaluza-Klein spectra.
    • These findings can significantly relax experimental bounds on large extra dimension models.
    • The study provides new avenues for exploring theories with large extra spacetime dimensions.