English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the scale-dependence of halo bias in generic (non-local) primordialnon-Gaussian (PNG) initial conditions of the type motivated by inflation,parametrized by an arbitrary quadratic kernel. We first show how to generatenon-local PNG initial conditions with minimal overhead compared to local PNGmodels for a general class of primordial bispectra that can be written aslinear combinations of separable templates. We run cosmological simulations forthe local, and non-local equilateral and orthogonal models and present resultson the scale-dependence of halo bias. We also derive a general formula for theFourier-space bias using the peak-background split (PBS) in the context of theexcursion set approach to halos and discuss the difference and similaritieswith the known corresponding result from local bias models. Our PBS biasformula generalizes previous results in the literature to include non-Markovianeffects and non-universality of the mass function and are in better agreementwith measurements in numerical simulations than previous results for a varietyof halo masses, redshifts and halo definitions. We also derive for the firsttime quadratic bias results for arbitrary non-local PNG, and show thatnon-linear bias loops give small corrections at large-scales. The resultingwell-behaved perturbation theory paves the way to constrain non-local PNG frommeasurements of the power spectrum and bispectrum in galaxy redshift surveys.

Large-scale Bias and Efficient Generation of Initial Conditions for Non-Local Primordial Non-Gaussianity