Dangerous implications of a minimum length in quantum gravity
Abstract
The existence of a minimum length and a generalization of the Heisenberg uncertainty principle seem to be two fundamental ingredients required in any consistent theory of quantum gravity. In this paper, we show that they would predict dangerous processes which are phenomenologically unacceptable. For example, longlived virtual superPlanck mass black holes may lead to rapid proton decay. Possible solutions of this puzzle are briefly discussed.
 Publication:

Classical and Quantum Gravity
 Pub Date:
 October 2008
 DOI:
 10.1088/02649381/25/19/195013
 arXiv:
 arXiv:0803.0749
 Bibcode:
 2008CQGra..25s5013B
 Keywords:

 High Energy Physics  Theory;
 Astrophysics;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Phenomenology
 EPrint:
 5 pages, no figure. v3: refereed version