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Cosmological analyses of redshift space clustering data are primarily based on using luminous ``red'' galaxies (LRGs) and ``blue'' emission line galaxies (ELGs) to trace underlying dark matter. Using the large high-fidelity high-resolution…

The goal of this study is to conduct a timely analysis of the high-redshift star-forming galaxy populations, which will be informative in designing next-generation experiments and their extragalactic targets. We use the hydrodynamical…

宇宙学与河外天体物理 · 物理学 2024-03-06 Jyotsna Ravi , Boryana Hadzhiyska , Martin White , Lars Hernquist , Sownak Bose

Forward modeling the galaxy density within the Effective Field Theory of Large Scale Structure (EFT of LSS) enables field-level analyses that are robust to theoretical uncertainties. At the same time, they can maximize the constraining…

宇宙学与河外天体物理 · 物理学 2025-10-08 Julia Stadler , Fabian Schmidt , Martin Reinecke , Matteo Esposito

Analyzing the clustering of galaxies at the field level in principle promises access to all the cosmological information available. Given this incentive, in this paper we investigate the performance of field-based forward modeling approach…

宇宙学与河外天体物理 · 物理学 2023-07-31 Andrija Kostić , Nhat-Minh Nguyen , Fabian Schmidt , Martin Reinecke

Perturbative, or effective field theory (EFT)-based, full-shape analyses of galaxy clustering data involve ``nuisance parameters'' to capture various observational effects such as the galaxy-dark matter connection (galaxy bias). We present…

宇宙学与河外天体物理 · 物理学 2024-09-11 Mikhail M. Ivanov , Carolina Cuesta-Lazaro , Siddharth Mishra-Sharma , Andrej Obuljen , Michael W. Toomey

A near-future detection of the 21cm signal from the epoch of reionization will provide unique opportunities to probe the underlying cosmology, provided that such cosmological information can be extracted with precision. To this end, we…

宇宙学与河外天体物理 · 物理学 2022-12-28 Wenzer Qin , Katelin Schutz , Aaron Smith , Enrico Garaldi , Rahul Kannan , Tracy R. Slatyer , Mark Vogelsberger

Redshift-space distortions (RSD), caused by the peculiar velocities of galaxies, are a key modelling challenge in galaxy clustering analyses, limiting the scales from which cosmological information can be reliably extracted. Unlike…

We explore full-shape analysis with simulation-based priors, which is the simplest approach to galaxy clustering data analysis that combines effective field theory (EFT) on large scales and numerical simulations on small scales. The core…

宇宙学与河外天体物理 · 物理学 2025-03-10 Mikhail M. Ivanov , Andrej Obuljen , Carolina Cuesta-Lazaro , Michael W. Toomey

We provide a perturbative effective field theory (EFT) description for anisotropic (redshift-space) correlations between the Lyman alpha forest and a generic biased tracer of matter, which could be represented by quasars, high-redshift…

宇宙学与河外天体物理 · 物理学 2025-01-23 Anton Chudaykin , Mikhail M. Ivanov

We present an effective field theory (EFT) approach to extract fundamental cosmological parameters from the Lyman-alpha forest flux fluctuations as an alternative to the standard simulation-based techniques. As a first application, we…

宇宙学与河外天体物理 · 物理学 2025-02-21 Mikhail M. Ivanov , Michael W. Toomey , Naim Göksel Karaçaylı

We investigate the effects of stellar populations and sizes on Ly$\alpha$ escape in 27 spectroscopically confirmed and 35 photometric Lyman-Alpha Emitters (LAEs) at z $\approx$ 2.65 in seven fields of the Bo\"otes region of the NOAO Deep…

The Effective Field Theory of Large-Scale Structure (EFTofLSS) provides a novel formalism that is able to accurately predict the clustering of large-scale structure (LSS) in the mildly non-linear regime. Here we provide the first…

宇宙学与河外天体物理 · 物理学 2016-10-31 Ashley Perko , Leonardo Senatore , Elise Jennings , Risa H. Wechsler

We present a physically motivated semi-analytic model to understand the clustering of high redshift Lyman Alpha Emitters (LAEs). We show that the model parameters constrained by the observed luminosity functions, can be used to predict…

宇宙学与河外天体物理 · 物理学 2015-06-15 Charles Jose , Raghunathan Srianand , Kandaswamy Subramanian

Projecting measurements of the interactions of the known Standard Model (SM) states into an effective field theory (EFT) framework is an important goal of the LHC physics program. The interpretation of measurements of the properties of the…

高能物理 - 唯象学 · 物理学 2019-02-19 Ilaria Brivio , Michael Trott

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 robustly marginalizing over any astrophysical uncertainties.…

宇宙学与河外天体物理 · 物理学 2023-10-31 Julia Stadler , Fabian Schmidt , Martin Reinecke

The standard $\rm \Lambda$CDM cosmological model predicts that a large amount of diffuse neutral hydrogen distributes in cosmic filaments, which could be mapped through Lyman-alpha (Ly$\alpha$) emission observations. We use the…

星系天体物理 · 物理学 2025-08-29 Yizhou Liu , Liang Gao , Shihong Liao , Kai Zhu

We present predictions for redshift-space peculiar velocity statistics in the Lagrangian and Eulerian formulations of the effective field theory (EFT) of large-scale structure. We compute 2-point pairwise velocity statistics up to the…

宇宙学与河外天体物理 · 物理学 2026-01-07 Shi-Fan Chen , Cullan Howlett , Yan Lai , Fei Qin

Effective Field Theory (EFT) is a general framework to parametrize the low-energy approximation to a UV model that is widely used in model-independent searches for new physics. The use of EFTs at the LHC can suffer from a 'validity' issue,…

高能物理 - 唯象学 · 物理学 2026-02-03 Spencer Chang , Markus A. Luty , Teng Ma , Francesco Montagno , Andrea Wulzer

The effective-field-theory (EFT) approach to the clustering of galaxies and other biased tracers allows for an isolation of the cosmological information that is protected by symmetries, in particular the equivalence principle, and thus is…

宇宙学与河外天体物理 · 物理学 2020-02-03 Franz Elsner , Fabian Schmidt , Jens Jasche , Guilhem Lavaux , Nhat-Minh Nguyen

We investigate the stochastic properties of typical red galaxy samples in a controlled numerical environment. We use Halo Occupation Distribution (HOD) modelling to create mock realizations of three separate bright red galaxy samples…

宇宙学与河外天体物理 · 物理学 2022-06-08 Nickolas Kokron , Joseph DeRose , Shi-Fan Chen , Martin White , Risa H. Wechsler
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