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Showing 1 to 6 of 6 for “"Three-point correlation"”.
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Moments of parton distribution amplitudes and structure functions for the light mesons from lattice QCD
… moments of the PDAs on the lattice using two point correlation functions of local operators. This calculation extracts the first two moments for the light mesons and is performed on three ensembles, with parameters, that enable a study of finite volume and discretisation effects. We use the …
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High-Resolution CMB Bispectrum Estimator
… CMB bispectrum, the Fourier equivalent of the three-point correlation function, allows us to study weak non-Gaussian signatures of the primordial fluctuations. Primordial non-Gaussianity is a key prediction of many physically well-motivated inflation models, and measuring its shape and …
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Three-Point Correlator and Pion Form Factor in Quantum Chromodynamics: Methods of Calculation for Two-Loop Spectral Density
… calculation of spectral density for the 3-point correlation function of an electromagnetic current and two axial currents which are the basis of the pion form factor analysis within the framework of QCD sum rules and local quark-hadron duality approach. The nature of various types of …
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Tracing the Cosmos: Probing Cosmology with the Large Scale Structure of the Universe
… Finally, I present the first detection of the three-point correlation between galaxies and CMB lensing. I show that the detection is robust to potential sources of systematic bias and present a comparison to model predictions. This signal can be used to constrain the evolution of structure on …
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On Gaussian Multiplicative Chaos
… the theory of Gaussian multiplicative chaos in three different directions. We commence with a new connection with random matrix theory, showing that for large Hermitian matrices sampled from the one-cut-regular unitary ensemble, the absolute powers of the characteristic polynomial, when suitably …
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Advancing the Matter Bispectrum Estimation in Large-Scale Structure
… as Planck. Higher-order statistics, like the three-point correlation function or bispectrum in Fourier space, will be indispensable for furthering our understanding of the Universe. While these methodologies have been developed over the years and applied to CMB analyses, similar work on …