41 citations · 67 across the 9 of their papers we have counts for
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Probe of spatial geometry from scalar induced gravitational waves
Utkarsh Kumar, Udaykrishna Thattarampilly, Pankaj Chaturvedi
We investigate a novel probe of spatial geometry of the Universe through the observation of gravitational waves (GWs) induced by first order curvature perturbations. The existence…
Requiem to "Proof of Inflation" or Sourced Fluctuations in a Non-Singular Bounce
Ido Ben-Dayan, Udaykrishna Thattarampilly
Popular wisdom suggests that measuring the tensor to scalar ratio on CMB scales is a "proof of inflation" since one generic prediction is a scale-invariant tensor spectrum whil…
Probing The Early Universe Cosmology With NANOGrav: Possibilities and Limitations
Ido Ben-Dayan, Utkarsh Kumar, Udaykrishna Thattarampilly +1
A stochastic gravitational wave background is a prediction of a number of astrophysical and cosmological phenomena including early Universe Cosmology. Recently, the NANOGrav Collab…