no code implementations • 21 Jan 2021 • Rayne Liu, Georgios Valogiannis, Nicholas Battaglia, Rachel Bean
For a fiducial model of $f(R)$ with $\text{log}_{10}(f_{R0})=-6$ and $n=1$ we find combined constraints of $\sigma(\text{log}_{10}(f_{R0}))=0. 48$ and $\sigma(n)=2. 3$, while for the nDGP model with $n_{\text{nDGP}}=1$ we find $\sigma(n_{\text{nDGP}})=0. 087$.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
1 code implementation • 9 Dec 2020 • Alejandro Aviles, Georgios Valogiannis, Mario A. Rodriguez-Meza, Jorge L. Cervantes-Cota, Baojiu Li, Rachel Bean
We develop a framework to compute the redshift space power spectrum (PS), with kernels beyond Einstein-de Sitter (EdS), that can be applied to a wide variety of generalized cosmologies.
Cosmology and Nongalactic Astrophysics
2 code implementations • 11 Jan 2019 • Georgios Valogiannis, Rachel Bean
We extend the Convolution Lagrangian Perturbation Theory (CLPT) resummation formalism to analytically predict real and Fourier space two-point statistics for biased tracers in f(R) Hu-Sawicki and the nDGP braneworld modified gravity theories and compare the CLPT performance against predictions from Standard Perturbation Theory (SPT) and Lagrangian Resummation Theory.
Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology
