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Title: Cosmological constant in scale-invariant theories

Abstract

The incorporation of a small cosmological constant within radiatively broken scale-invariant models is discussed. We show that phenomenologically consistent scale-invariant models can be constructed which allow a small positive cosmological constant, providing certain relation between the particle masses is satisfied. As a result, the mass of the dilaton is generated at two-loop level. Another interesting consequence is that the electroweak symmetry-breaking vacuum in such models is necessarily a metastable ''false'' vacuum which, fortunately, is not expected to decay on cosmological time scales.

Authors:
; ;  [1]
  1. School of Physics, University of Melbourne, Victoria 3010 (Australia)
Publication Date:
OSTI Identifier:
21607813
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 84; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.84.075010; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMOLOGICAL CONSTANT; INVARIANCE PRINCIPLES; MASS; RADIATIVE DECAY; SYMMETRY BREAKING; DECAY; PARTICLE DECAY

Citation Formats

Foot, Robert, Kobakhidze, Archil, and Volkas, Raymond R. Cosmological constant in scale-invariant theories. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.84.075010.
Foot, Robert, Kobakhidze, Archil, & Volkas, Raymond R. Cosmological constant in scale-invariant theories. United States. doi:10.1103/PHYSREVD.84.075010.
Foot, Robert, Kobakhidze, Archil, and Volkas, Raymond R. Sat . "Cosmological constant in scale-invariant theories". United States. doi:10.1103/PHYSREVD.84.075010.
@article{osti_21607813,
title = {Cosmological constant in scale-invariant theories},
author = {Foot, Robert and Kobakhidze, Archil and Volkas, Raymond R.},
abstractNote = {The incorporation of a small cosmological constant within radiatively broken scale-invariant models is discussed. We show that phenomenologically consistent scale-invariant models can be constructed which allow a small positive cosmological constant, providing certain relation between the particle masses is satisfied. As a result, the mass of the dilaton is generated at two-loop level. Another interesting consequence is that the electroweak symmetry-breaking vacuum in such models is necessarily a metastable ''false'' vacuum which, fortunately, is not expected to decay on cosmological time scales.},
doi = {10.1103/PHYSREVD.84.075010},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 84,
place = {United States},
year = {2011},
month = {10}
}