Signatures in the Planck regime

  • String theory suggests the existence of a minimum length scale. An exciting quantum mechanical implication of this feature is a modification of the uncertainty principle. In contrast to the conventional approach, this generalised uncertainty principle does not allow to resolve space time distances below the Planck length. In models with extra dimensions, which are also motivated by string theory, the Planck scale can be lowered to values accessible by ultra high energetic cosmic rays (UHECRs) and by future colliders, i.e. M f approximately equal to 1 TeV. It is demonstrated that in this novel scenario, short distance physics below 1/M f is completely cloaked by the uncertainty principle. Therefore, Planckian effects could be the final physics discovery at future colliders and in UHECRs. As an application, we predict the modifications to the e+ e- to f+ f- cross-sections.

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Author:Sabine HossenfelderORCiDGND, Marcus BleicherORCiDGND, Stefan Hofmann, Jörg RuppertGND, Stefan SchererORCiDGND, Horst StöckerORCiDGND
ArXiv Id:
Document Type:Preprint
Date of Publication (online):2005/10/27
Year of first Publication:2003
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/10/27
Version 1 ersch. u.d.T.: Collider signatures in the Planck regime
Source:hep-th/0305262, Phys.Lett. B575 (2003)
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht