Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-10-11
Phys.Lett. B448 (1999) 191-194
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, to appear in PLB. v3 has Same conclusion stated more precisely
Scientific paper
10.1016/S0370-2693(99)00051-9
Allowing for the possibility of large extra dimensions, the fundamental Planck scale $M$ could be anywhere in the range $\TeV\lsim M\lsim \mpl$, where $\mpl=2.4\times 10^{18}\GeV$ is the four-dimensional Planck scale. If $M\sim\TeV$, quantum corrections would not destabilize the Higgs mass even if there were no supersymmetry. But we point out that supersymmetry must in fact be present, if there is an era of cosmological inflation, since during such an era the inflaton mass satisfies $m\ll M^2/\mpl=10^{-15}(M/\TeV)$ and supersymmetry will be needed to protect it. If the inflation hypothesis is accepted, there is no reason to think that Nature has chosen the low value $M\sim \TeV$, however convenient that choice might have been for the next generation of collider experiments.
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