Inflation from broken scale invariance.

  title={Inflation from broken scale invariance.},
  author={Csaba Cs{\'a}ki and Nemanja Kaloper and Javi Serra and John Terning},
  journal={Physical review letters},
  volume={113 16},
We construct a model of inflation based on a low-energy effective theory of spontaneously broken global scale invariance. This provides a shift symmetry that protects the inflaton potential from quantum corrections. Since the underlying scale invariance is noncompact, arbitrarily large inflaton field displacements are readily allowed in the low-energy effective theory. A weak breaking of scale invariance by almost marginal operators provides a nontrivial inflaton minimum, which sets and… 

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