Galaxy power spectrum multipoles covariance in perturbation theory
Digvijay Wadekar, Román Scoccimarro
Abstract
This paper presents a perturbative calculation of the power spectrum covariance matrix in the context of the large-scale galaxy redshift survey, including all relevant physical and observational effects. It estimates the matrix using the standard FKP estimator, providing a thorough and correct derivation of all the effects at the tree level in the trispectrum and updating some previously reported numerical factors.
Topics & Concepts
TrispectrumSpectral densityEstimatorCovariance matrixPhysicsGalaxyCovarianceStatistical physicsPerturbation theory (quantum mechanics)Context (archaeology)AstrophysicsTheoretical physicsMathematicsStatisticsQuantum mechanicsGeologyAnisotropyCosmic microwave backgroundNon-GaussianityPaleontologyGalaxies: Formation, Evolution, PhenomenaCosmology and Gravitation TheoriesScientific Research and Discoveries