Jiamin is currently a Marie Sklodowska-Curie Fellow hosted by the University of Florida and the Max-Planck Institute of Extraterrestrial physics. She is interested in cosmology and applying summary statistics to the large-scale structure to understand the early Universe as well as fundamental laws of physics.
Title: Recent Developments in Clustering Analysis of Large-Scale Structure
Abstract: Large-scale structure provides insights into the Universe's expansion history and the growth rate of structure. While the 2-point statistics can capture all information in a Gaussian random field, higher-order statistics encode crucial information about gravitationally-induced nonlinearity and deviation from a Gaussian initial condition. Higher-order N-point correlation function or polyspectra as its Fourier counterpart thus allow us more precise knowledge about the energy density content of the Universe and provides unique windows into the primordial Universe. Recently, we showed that higher-order statistics could be used to test parity violation at cosmological scales. In this talk, I will present our analysis and the implication of the measurement. Finally, I will also present our recent analysis of the galaxy skew spectra as a compressed bispectrum estimator and a forecast of its cosmological information.