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  • Arya, Richa (IOP Publishing, 2020-09)
    Primordial Black Holes (PBHs) serve as a unique probe to the physics of the early Universe, particularly inflation. In light of this, we study the formation of PBHs by the collapse of overdense perturbations generated ...
  • Arya, Richa; Mahajan, Namit; Rangarajan, Raghavan (Elsevier, 2017-09)
    We study the production of spin 1/2 gravitinos in a thermal Universe. Taking into account supersymmetry breaking due to the finite thermal energy density of the Universe, there is a large enhancement in the cross section ...
  • Arya, Richa; Dasgupta, Arnab; Goswami, Gaurav; Prasad, Jayanti; Rangarajan, Raghavan (IOP Publishing, 2018-02)
    We revisit the constraints that Planck 2015 temperature, polarization and lensing data impose on the parameters of warm inflation. To this end, we study warm inflation driven by a single scalar field with a quartic self ...
  • Arya, Richa; Rangarajan, Raghavan (World Scientific Publishing, 2020-06)
    Observations of the temperature anisotropies in the Cosmic Microwave Back-ground (CMB) radiation show that the models of inflation with the monomial potentials areinconsistent with the allowedns?rbounds. However ...

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