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Related papers: One-Loop Galaxy Bispectrum: Consistent Theory, Eff…

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We generalize previously derived analytic results for the one-loop power spectrum (PS) in scale-free models (with linear PS $P(k) \propto k^n$) to a broader class of such models in which part of the matterlike component driving the Einstein…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-31 Azrul Pohan , Michael Joyce , David Benhaiem , Francesco Sylos Labini

Conventional estimators of the anisotropic power spectrum and two-point correlation function (2PCF) adopt the `Yamamoto approximation', fixing the line-of-sight of a pair of galaxies to that of just one of its members. Whilst this is…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-16 Oliver H. E. Philcox , Zachary Slepian

Upcoming surveys of cosmic structures will probe scales close to the cosmological horizon, which opens up new opportunities for testing the cosmological concordance model to high accuracy. In particular, constraints on the squeezed…

Cosmology and Nongalactic Astrophysics · Physics 2023-08-28 Thomas Montandon , Julian Adamek , Oliver Hahn , Jorge Noreña , Cornelius Rampf , Clément Stahl , Bartjan van Tent

We measured the harmonic-space power spectrum of galaxy clustering auto-correlation from the Evolutionary Map of the Universe Pilot Survey 1 data (EMU PS1) and its cross-correlation with the lensing convergence map of cosmic microwave…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-21 K. Tanidis , J. Asorey , C. S. Saraf , C. L. Hale , B. Bahr-Kalus , D. Parkinson , S. Camera , R. P. Norris , A. M. Hopkins , M. Bilicki , N. Gupta

We present a re-analysis of cosmic shear and galaxy clustering from first-year Dark Energy Survey data (DES Y1), making use of a Hybrid Effective Field Theory (HEFT) approach to model the galaxy-matter relation on weakly non-linear scales,…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-22 Boryana Hadzhiyska , Carlos García-García , David Alonso , Andrina Nicola , Anže Slosar

It is widely believed that maximum likelihood estimators must be used to provide optimal estimates of power spectra. Since such estimators require require of order N_d^3 operations they are computationally prohibitive for N_d greater than a…

Astrophysics · Physics 2008-11-26 G. Efstathiou

Effective field theory (EFT)-based full-shape analysis with simulation-based priors (SBPs) is a novel approach to galaxy clustering data analysis, which significantly boosts the constraining power by efficiently incorporating field-level…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-11 Mikhail M. Ivanov

Modern slitless spectroscopic surveys, such as Euclid and the Roman Space Telescope, collect vast numbers of galaxy spectra but suffer from low signal-to-noise ratios. This often leads to incorrect redshift assignments when relying on a…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-10 Marina S. Cagliari , Azadeh Moradinezhad Dizgah , Francisco Villaescusa-Navarro

Redshift-space clustering anisotropies caused by cosmic peculiar velocities provide a powerful probe to test the gravity theory on large scales. However, to extract unbiased physical constraints, the clustering pattern has to be modelled…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-28 Federico Marulli , Alfonso Veropalumbo , Lauro Moscardini , Andrea Cimatti , Klaus Dolag

We discuss methods for estimating EB and TB spectra of the Cosmic Microwave Background anisotropy maps covering limited sky area. Such odd-parity correlations are expected to vanish whenever parity is not broken. As this is indeed the case…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-18 Julien Grain , Matthieu Tristram , Radek Stompor

We present the first MCMC-derived constraints on the parameters of the Large Scale Structure (LSS) bootstrap, a model-independent framework that captures deviations from $\Lambda$CDM using symmetry arguments alone. Focusing on modifications…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-14 Giorgia Biselli , Marco Marinucci , Guido D'Amico , Massimo Pietroni

We compute the full-sky angular power spectrum and bispectrum, along with their Fisher matrices, to forecast constraints on cosmological parameters for the BINGO and SKA1-MID Band 2 radio telescopes. This represents the first forecast…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-23 Rodrigo F. Pinheiro , André A. Costa , Yu Sang

The renormalisation group improved Standard Model effective potential in an arbitrary curved spacetime is computed to one loop order in perturbation theory. The loop corrections are computed in the ultraviolet limit, which makes them…

High Energy Physics - Phenomenology · Physics 2018-06-11 Tommi Markkanen , Sami Nurmi , Arttu Rajantie , Stephen Stopyra

We derive general expressions for how the Alcock-Paczynski distortions affect the power spectrum and the bispectrum of cosmological fields. We compute explicit formulas for the mixing coefficients of bispectrum multipoles in the linear…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-09 Giorgi Khomeriki , Lado Samushia

Weak lensing by large-scale structure is a powerful probe of cosmology and of the dark universe. This cosmic shear technique relies on the accurate measurement of the shapes and redshifts of background galaxies and requires precise control…

We introduce EFTCAMB/EFTCosmoMC as publicly available patches to the commonly used CAMB/CosmoMC codes. We briefly describe the structure of the codes, their applicability and main features. To illustrate the use of these patches, we obtain…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Marco Raveri , Bin Hu , Noemi Frusciante , Alessandra Silvestri

We develop a universal approach to the one-loop effective field theory (EFT) using the Covariant Derivative Expansion (CDE) method. We generalise previous results to include broader classes of UV models, showing how expressions previously…

High Energy Physics - Phenomenology · Physics 2016-02-11 Aleksandra Drozd , John Ellis , Jérémie Quevillon , Tevong You

We study a two-loop contribution to the dark-matter trispectrum and evaluate it numerically using an infrared-safe integrand. The calculation is organized as an expansion around a fixed reference cosmology: the linear matter power spectrum…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-09 Andrea Favorito

In this work, we study the key role of generic Effective Field Theory (EFT) framework to quantify the correlation functions in a quasi de Sitter background for an arbitrary initial choice of the quantum vacuum state. We perform the…

High Energy Physics - Theory · Physics 2019-07-11 Sayantan Choudhury

We present optimal Bayesian field-level cosmological constraints from nonlinear tracers of the large-scale structure, specifically the amplitude $\sigma_8$ of linear matter fluctuations inferred from rest-frame simulated dark matter halos…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-28 Nhat-Minh Nguyen , Fabian Schmidt , Beatriz Tucci , Martin Reinecke , Andrija Kostić