# Differentiating G-inflation from string gas cosmology using the effective field theory approach

@article{He2016DifferentiatingGF, title={Differentiating G-inflation from string gas cosmology using the effective field theory approach}, author={Min-Tsung He and Junyu Liu and S. Lu and Siyi Zhou and Yi-Fu Cai and Yi Wang and Robert Brandenberger}, journal={Journal of Cosmology and Astroparticle Physics}, year={2016}, volume={2016}, pages={040 - 040} }

A characteristic signature of String Gas Cosmology is primordial power spectra for scalar and tensor modes which are almost scale-invariant but with a red tilt for scalar modes but a blue tilt for tensor modes. This feature, however, can also be realized in the so-called G-inflation model, in which Horndeski operators are introduced which leads to a blue tensor tilt by softly breaking the Null Energy Condition. In this article we search for potential observational differences between these two…

## 10 Citations

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