69 citations · 298 across the 8 of their papers we have counts for
5 papers · 1 filter
Constraining Single-Field Inflation with MegaMapper
Giovanni Cabass, Mikhail M. Ivanov, Oliver H. E. Philcox +2
We forecast the constraints on single-field inflation from the bispectrum of future high-redshift surveys such as MegaMapper. Considering non-local primordial non-Gaussianity (NLPN…
Modeling Galaxies in Redshift Space at the Field Level
Marcel Schmittfull, Marko Simonović, Mikhail M. Ivanov +2
We develop an analytical forward model based on perturbation theory to predict the redshift-space galaxy overdensity at the field level given a realization of the initial condition…
Fewer Mocks and Less Noise: Reducing the Dimensionality of Cosmological Observables with Subspace Projections
Oliver H. E. Philcox, Mikhail M. Ivanov, Matias Zaldarriaga +2
Creating accurate and low-noise covariance matrices represents a formidable challenge in modern-day cosmology. We present a formalism to compress arbitrary observables into a small…
Efficient Evaluation of Cosmological Angular Statistics
Valentin Assassi, Marko Simonović, Matias Zaldarriaga
Angular statistics of cosmological observables are hard to compute. The main difficulty is due to the presence of highly-oscillatory Bessel functions which need to be integrated ov…
or Not : Testing the Simplest Inflationary Potential
Paolo Creminelli, Diana López Nacir, Marko Simonović +2
The simplest inflationary model represents the benchmark for future constraints. For a quadratic potential, the quantity vanishes (…