2 papers
astro-ph.CO2026
The observer power spectrum for lightcone statistics, integrated relativistic observables and wide angle effects
Chris Clarkson, Pritha Paul
The statistics of large-scale structure are naturally described by power spectra in Fourier space. For fields on spatial hypersurfaces, translational invariance makes different Fou…
astro-ph.CO2026
Statistical Field Theory for Weak Gravitational Lensing
Zheng Zhang, Philip Bull, Chris Clarkson +1
Standard weak-lensing calculations treat lensing as a linear remapping of the matter field along the line of sight. We instead formulate lensing as a stochastic field theory for th…