par Calmet, Xavier ;Hsu, Stephen D H;Reeb, David
Référence AIP Conference Proceedings, 1078, page (432-434)
Publication Publié, 2008
Article révisé par les pairs
Résumé : In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the boundary conditions for coupling constant unification, if higher dimensional operators induced by gravity are taken into consideration. We show that the generic size of, and the uncertainty in, these effects from gravity can be larger than the two-loop corrections typically considered in renormalization group analyses of unification. In some cases, gravitational effects of modest size can render unification impossible. © 2008 American Institute of Physics.

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