Adiabatic duality: Duality of cosmological models with varying slow-roll parameter and sound speed

  title={Adiabatic duality: Duality of cosmological models with varying slow-roll parameter and sound speed},
  author={Jiaming Shi and Zheng Fang and Taotao Qiu},
  journal={Physical Review D},
There have been thousands of cosmological models for our early universe proposed in the literature, and many of them claimed to be able to give rise to scale-invariant power spectrum as was favored by the observational data. It is thus interesting to think about whether there are some relations among them, e.g., the duality relation. In this paper, we investigate duality relations between cosmological models in framework of general relativity (GR) , not only with varying slow-roll parameter… 

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