Scholarship 23/08560-7 - Cosmologia física, Galáxias - BV FAPESP
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Exploring the dark sector with cross correlation of CMB lensing and galaxy surveys

Grant number: 23/08560-7
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Start date until: November 01, 2023
End date until: June 30, 2024
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Nathan Jacob Berkovits
Grantee:Louis Legrand
Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
Associated research grant:21/14335-0 - ICTP South American Institute for Fundamental Research: a regional center for Theoretical Physics, AP.ESP

Abstract

Upcoming galaxy and CMB surveys, including LSST and CMB-S4, are an unprecedented opportunity to explore the dark sector of the Universe. By mapping the distribution and shape of billions of galaxies, and by reconstructing the CMB gravitational lensing induced by large scale structures, these experiments offer complementary observables that shed light on the matter distribution and the growth of cosmic structures. This research project aims to develop the cross correlation and joint analysis of the LSST galaxy survey with CMB experiments, such as CMB-S4. By leveraging the synergies between these probes, we can overcome systematic limitations and break parameter degeneracies, enabling optimal constraints on key parameters such as the equation of state of dark energy and the sum of neutrino masses. (AU)

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