Browsing Institutt for teoretisk astrofysikk by Author "Aviles, Alejandro"

Now showing items 1-4 of 4

  • fkPT: constraining scale-dependent modified gravity with the full-shape galaxy power spectrum 
    Rodriguez-Meza, Mario A.; Aviles, Alejandro; Noriega, Hernan E.; Ruan, Cheng-Zong; Li, Baojiu; Vargas-Magaña, Mariana; Cervantes-Cota, Jorge L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Modified gravity models with scale-dependent linear growth typically exhibit an enhancement in the power spectrum beyond a certain scale. The conventional methods for extracting cosmological information usually involve ...
  • Marked correlation functions in perturbation theory 
    Aviles, Alejandro; Koyama, Kazuya; Cervantes-Cota, Jorge L; Winther, Hans Arnold; Li, Baojiu (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    We develop perturbation theory approaches to model the marked correlation function constructed to up-weight low density regions of the Universe, which might help distinguish modified gravity models from the standard cosmology ...
  • Screenings in modified gravity: a perturbative approach 
    Aviles, Alejandro; Cervantes-Cota, Jorge L; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We present a formalism to study screening mechanisms in modified theories of gravity through perturbative methods in different cosmological scenarios. We consider Einstein-frame posed theories that are recast as Jordan-frame ...
  • Towards testing the theory of gravity with DESI: summary statistics, model predictions and future simulation requirements 
    Alam, Shadab; Arnold, Christian; Aviles, Alejandro; Bean, Rachel; Cai, Yan-Chuan; Cautun, Marius; Cervantes-Cota, Jorge L.; Cuesta-Lazoro, Carolina; Devi, N. Chandrachani; Eggemeier, Alexander; Fromenteau, Sebastien; Gonzalez-Morales, Alma X.; Halenka, Vitali; He, Jian-hua; Hellwing, Wojciech A.; Hernández-Aguayo, César; Ishak, Mustapha; Koyama, Kazuya; Li, Baojiu; de la Macorra, Axel; Meneses Rizo, Jennifer; Miller, Christopher; Mueller, Eva-Maria; Niz, Gustavo; Ntelis, Pierros; Rodríguez Otero, Matia; Sabiu, Cristiano G.; Slepian, Zachary; Stark, Alejo; Valenzuela, Octavio; Valogiannis, Georgios; Vargas-Magana, Mariana; Winther, Hans Arnold; Zarrouk, Pauline; Zhao, Gong-Bo; Zheng, Yi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our Universe on the largest scales, and later became the foundation of modern cosmology. Its validity has been verified on a range ...