56 citations · 200 across the 11 of their papers we have counts for
10 papers · 1 filter
Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation
Henrique Rubira, Fabian Schmidt
We revisit the stochastic, or noise, contributions to the galaxy density field within the effective field theory (EFT) of large-scale structure. Starting from the general, all-orde…
Parity Violation in Galaxy Shapes: Primordial Non-Gaussianity
Toshiki Kurita, Drew Jamieson, Eiichiro Komatsu +1
We present a comprehensive study of galaxy intrinsic alignment (IA) as a probe of parity-violating primordial non-Gaussianity (PNG). Within the effective field theory (EFT) framewo…
Mixed Dark Matter and Galaxy Clustering: The Importance of Relative Perturbations
Şafak Çelik, Fabian Schmidt
We develop a perturbative model to describe large-scale structure in cosmologies where dark matter consists of a mixture of cold (CDM) and warm (WDM) components. In such mixed dark…
Structure formation with primordial black holes: collisional dynamics, binaries, and gravitational waves
M. Sten Delos, Antti Rantala, Sam Young +1
Primordial black holes (PBHs) could compose the dark matter content of the Universe. We present the first simulations of cosmological structure formation with PBH dark matter that…
Galaxy bias renormalization group
Henrique Rubira, Fabian Schmidt
The effective field theory of large-scale structure allows for a consistent perturbative bias expansion of the rest-frame galaxy density field. In this work, we present a systemati…
Halo assembly bias from a deep learning model of halo formation
Luisa Lucie-Smith, Alexandre Barreira, Fabian Schmidt
We build a deep learning framework that connects the local formation process of dark matter halos to the halo bias. We train a convolutional neural network (CNN) to predict the fin…
Effective Field Theory of Intrinsic Alignments at One Loop Order: a Comparison to Dark Matter Simulations
Thomas Bakx, Toshiki Kurita, Nora Elisa Chisari +2
We test the regime of validity of the effective field theory (EFT) of intrinsic alignments (IA) at the one-loop level by comparing with 3D halo shape statistics in N-body simulatio…
Cosmology inference at the field level from biased tracers in redshift-space
Julia Stadler, Fabian Schmidt, Martin Reinecke
Cosmology inference of galaxy clustering at the field level with the EFT likelihood in principle allows for extracting all non-Gaussian information from quasi-linear scales, while…
Assembly bias in the local PNG halo bias and its implication for constraints
Titouan Lazeyras, Alexandre Barreira, Fabian Schmidt +1
We use -body simulations to study halo assembly bias (i.e., the dependence of halo clustering on properties beyond total mass) in the density and primordial non-Gaussianity (PNG…
Imprints of Oscillatory Bispectra on Galaxy Clustering
Giovanni Cabass, Enrico Pajer, Fabian Schmidt
Long-short mode coupling during inflation, encoded in the squeezed bispectrum of curvature perturbations, induces a dependence of the local, small-scale power spectrum on long-wave…