Scale of quantum gravity
Scale of quantum gravity
复制标题
量子引力尺度
DOI:
10.1016/j.physletb.2005.04.040
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发表时间:
2004
影响因子:
4.4
通讯作者:
S. Willenbrock
中科院分区:
文献类型:
--
作者:
T. Han;S. Willenbrock
In the effective field theory of quantum gravitation coupled to Nsscalars, Nffermions, and NVvectors, tree unitarity is violated at an energy squared of [Formula: see text] , where N≡23Ns+Nf+4NVand GNis Newton's constant. This is related to radiative corrections proportional to GNNE2(where E is the typical energy), due to loops of such particles. New physics must enter before ECM≈6×1018GeV in the standard model, and 4×1018GeV in the minimal supersymmetric standard model.