Goldstone's theorem does not apply straightforwardly to the case of spontaneously broken scale invariance. We elucidate under what conditions a light scalar degree of freedom, identifiable with the dilaton, can naturally arise. Our construction can be considered an explicit dynamical solution to the cosmological constant problem in the scalar version of gravity.
A naturally light dilaton / Francesco Coradeschi; Paolo Lodone; Duccio Pappadopulo; Riccardo Rattazzi; Lorenzo Vitale. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - ELETTRONICO. - (2013), pp. 057-057. [10.1007/JHEP11(2013)057]
A naturally light dilaton
CORADESCHI, FRANCESCO;
2013
Abstract
Goldstone's theorem does not apply straightforwardly to the case of spontaneously broken scale invariance. We elucidate under what conditions a light scalar degree of freedom, identifiable with the dilaton, can naturally arise. Our construction can be considered an explicit dynamical solution to the cosmological constant problem in the scalar version of gravity.
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