Quantum scale invariance, cosmological constant and hierarchy problem

We construct a class of theories which are scale-invariant on quantum level in all orders of perturbation theory. In a subclass of these models scale invariance is spontaneously broken, leading to the existence of a massless dilaton. The applications of these results to the problem of stability of the electroweak scale against quantum corrections, to the cosmological constant problem and to dark energy are discussed. © 2008 Elsevier B.V. All rights reserved.


Published in:
Phys. Lett., B671, 162-166
Year:
2009
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Scopus: 2-s2.0-57749100991
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 Record created 2010-09-07, last modified 2018-09-13

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