Solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory

Robert Foot, Archil Kobakhidze, Kristian L. McDonald, and Raymond R. Volkas
Phys. Rev. D 77, 035006 – Published 19 February 2008

Abstract

If scale invariance is a classical symmetry then both the Planck scale and the weak scale should emerge as quantum effects. We show that this can be realized in simple scale invariant theories with a hidden sector. The weak/Planck scale hierarchy emerges in the (technically natural) limit in which the hidden sector decouples from the ordinary sector. In this limit, finite corrections to the weak scale are consequently small, while quadratic divergences are absent by virtue of classical scale invariance, so there is no hierarchy problem.

  • Received 19 September 2007

DOI:https://doi.org/10.1103/PhysRevD.77.035006

©2008 American Physical Society

Authors & Affiliations

Robert Foot1,*, Archil Kobakhidze1,†, Kristian L. McDonald2,‡, and Raymond R. Volkas1,§

  • 1School of Physics, Research Centre for High Energy Physics, University of Melbourne, Victoria 3010, Australia
  • 2Theory Group, TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T2A3, Canada

  • *rfoot@unimelb.edu.au
  • archilk@unimelb.edu.au
  • klmcd@triumf.ca
  • §raymondv@unimelb.edu.au

See Also

Cosmological constant in scale-invariant theories

Robert Foot, Archil Kobakhidze, and Raymond R. Volkas
Phys. Rev. D 84, 075010 (2011)

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Vol. 77, Iss. 3 — 1 February 2008

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