3 papers
astro-ph.CO2026
Lossless Compression of Cosmological Information from Type Ia Supernova Distance Measurements
Zhenyuan Wang, Yun Wang
We perform model-independent distance measurements on four Type Ia supernovae (SNe Ia) compilations (Pantheon, Pantheon+, DES-Dovekie, Union3) and compress each dataset into the va…
astro-ph.CO2026
Model-Independent Analysis of Type Ia Supernova Datasets and Implications for Dark Energy
Zhenyuan Wang, Yun Wang
Recent analyses combining DESI DR2 BAO with CMB and SNe Ia data have reported -- evidence for dynamical dark energy, but the significance depends strongly on the supern…
astro-ph.CO2024
Perturbation Theory Remixed II: Improved Modeling of Nonlinear Bispectrum
Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2
We present the application of the -th order Eulerian Perturbation Theory (EPT) for modeling the matter bispectrum in real space as an advancement over the Standard Perturbati…