161 citations · 569 across the 13 of their papers we have counts for
13 papers
Machine Learning Classification of SDSS Transient Survey Images
L. du Buisson, N. Sivanandam, B. A. Bassett +1
We show that multiple machine learning algorithms can match human performance in classifying transient imaging data from the Sloan Digital Sky Survey (SDSS) supernova survey into r…
Is the Cosmological Coincidence a Problem?
Navin Sivanandam
The matching of our epoch of existence with the approximate equality of dark energy and dark matter energy densities is an apparent further fine-tuning, beyond the already troublin…
The Inflationary Wavefunction and its Initial Conditions
Daniel Carney, Willy Fischler, Sonia Paban +1
We explore the effect of initial conditions on the inflationary wavefunction and their consequences for the observed spectrum of primordial fluctuations. In a class of models with…
Adiabaticity and the Fate of Non-Gaussianities: The Trispectrum and Beyond
Joel Meyers, Navin Sivanandam
Extending the analysis of [1011.4934] beyond the bispectrum, we explore the superhorizon generation of local non-gaussianities and their subsequent approach to adiabaticity. Workin…
Non-Gaussianities in Multifield Inflation: Superhorizon Evolution, Adiabaticity, and the Fate of fnl
Joel Meyers, Navin Sivanandam
We explore the superhorizon generation of large fnl of the local form in two field inflation. We calculate the two- and three-point observables in a general class of potentials whi…
Constraining the Inflationary Equation of State
Lotty Ackerman, Willy Fischler, Sandipan Kundu +1
We explore possible constraints on the inflationary equation state: p=wρ. While w must be close to -1 for those modes that contribute to the observed power spectrum, for those mode…