132 citations · 232 across the 12 of their papers we have counts for
12 papers
Evolutionary optimization of cosmological parameters using metropolis acceptance criterion
Supin P Surendran, Aiswarya A, Rinsy Thomas +1
A novel evolutionary method is introduced that can be used for constraining the parameters and theoretical models of Cosmology. The newly proposed algorithm, which is inherently pa…
Ringing Non-Gaussianity from inflation with a step in the second derivative of the potential
Rakhi. R, Minu Joy
Inflationary model driven by a scalar field whose potential has a step in the second derivative with respect to the field is considered. For the best fit potential parameter values…
Constraints on Tensor to Scalar Ratio using WKB Approximation
Aiswarya. A, Minu Joy
Using Wenzel-Kramers-Brillouin (WKB) approximation the scalar and tensor power spectra are obtained. Scale invariant spectra are obtained and the spectral indices come very close t…
Estimation of Inflation parameters for Perturbed Power Law model using recent CMB measurements
Suvodip Mukherjee, Santanu Das, Minu Joy +1
Cosmic Microwave Background (CMB) is an important probe for understanding the inflationary era of the Universe. We consider the Perturbed Power Law (PPL) model of inflation which i…
Perturbed Power-law parameters from WMAP7
Minu Joy, Tarun Souradeep
We present a perturbative approach for studying inflation models with soft departures from scale free spectra of the power law model. In the perturbed power law (PPL) approach one…
Is a step in the primordial spectral index favored by CMB data ?
Minu Joy, Arman Shafieloo, Varun Sahni +1
A sudden small change in the second derivative of the inflaton potential can result in a universal local feature in the spectrum of primordial perturbations generated during inflat…