Comment on ``Calculating the weak scale in supergravity models''

Details Comment on ``Calculating the weak scale in supergravity models'' Comment on ``Calculating the weak scale in supergravity models''

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvd..38..718d&link_type=abstract

Physical Review D (Particles and Fields), Volume 38, Issue 2, 15 July 1988, pp.718-720

Physics

6

Supergravity, Spontaneous Breaking Of Gauge Symmetries

Scientific paper

Kappen's ``Λ-space'' approach to radiative symmetry breaking in supergravity models is discussed. It is shown that this approach does not sum the leading-logarithmic radiative corrections. It is also pointed out that the threshold effects in the conventional renormalization-group (RG) approach are much smaller than apprehended by Kappen. It is finally argued that the threshold effects at the ultrahigh scale cannot be determined in the ``Λ-space'' approach, and that this definition of scalar masses contains the same ambiguities as the RG approach.

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