Generating primordial features at large scales in two field models of inflation

@article{Braglia2020GeneratingPF,
  title={Generating primordial features at large scales in two field models of inflation},
  author={Matteo Braglia and Dhiraj Kumar Hazra and L. Sriramkumar and Fabio Finelli},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2020}
}
We investigate the generation of features at large scales in the primordial power spectrum (PPS) when inflation is driven by two scalar fields. In canonical single field models of inflation, these features are often generated due to deviations from the slow-roll regime. While deviations from slow-roll can be naturally achieved in two field models due to a sharp turn in the trajectory in the field space, features at the largest scales of the types suggested by CMB temperature anisotropies are… 

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In this paper, we use a complete model of classical primordial standard clocks as an example to develop a methodology of directly comparing numerical predictions from complicated multi-field feature
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