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., Mf≈ 1 TeV. It is demonstrated that in this novel scenario, short distance physics below 1/Mf 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−→f+f− cross-sections.
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| Author: | Sabine HossenfelderORCiDGND, Marcus BleicherORCiDGND, Stefan Josef HofmannGND, Jörg RuppertGND, Stefan SchererORCiDGND, Horst StöckerORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-761022 |
| DOI: | https://doi.org/10.1016/j.physletb.2003.09.040 |
| ISSN: | 0370-2693 |
| Parent Title (English): | Physics Letters B |
| Publisher: | North-Holland Publ. |
| Place of publication: | Amsterdam [u.a.] |
| Document Type: | Article |
| Language: | English |
| Year of Completion: | 2003 |
| Year of first Publication: | 2003 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2023/09/19 |
| Volume: | 575 |
| Issue: | 1 |
| Article Number: | 85 |
| Page Number: | 15 |
| First Page: | 85 |
| Last Page: | 99 |
| HeBIS-PPN: | 513359567 |
| Institutes: | Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 3.0 |
