Speaker
Antonio Farina
(Istituto Nazionale di Astrofisica (INAF))
Description
In this talk, I will explore the potential of de-noising large cosmological covariance matrices using analytical techniques from Random Matrix Theory, particularly the class of Rotational Invariant estimators. I will evaluate the performance of this approach using galaxy clustering statistics and I will compare them with non-linear shrinkage methods, highlighting their advantages and limitations.
Author
Antonio Farina
(Istituto Nazionale di Astrofisica (INAF))
Co-authors
Alfonso Veropalumbo
(Istituto Nazionale di Astrofisica (INAF))
Enzo franco Branchini
Massimo Guidi
(University of Bologna)
