Features in the primordial power spectrum represent the imprinted signal in the density perturbations of the physics and evolution of the early Universe. A measurement of such signals will represents the need to go beyond the minimal assumption made for the initial conditions of the cosmological perturbations. For the first time, we study different templates with undamped oscillations or a bump from the two-point correlation function measured from BOSS DR12 galaxies constraining the amplitude of the features to be at most a few percent. Constraints are competitive to the ones obtained with Planck DR3.

Ballardini, M., Finelli, F., Marulli, F., Moscardini, L., Veropalumbo, A. (2023). New constraints on primordial features from the galaxy two-point correlation function. PHYSICAL REVIEW D, 107(4), 1-7 [10.1103/PhysRevD.107.043532].

New constraints on primordial features from the galaxy two-point correlation function

Marulli, F;Moscardini, L;
2023

Abstract

Features in the primordial power spectrum represent the imprinted signal in the density perturbations of the physics and evolution of the early Universe. A measurement of such signals will represents the need to go beyond the minimal assumption made for the initial conditions of the cosmological perturbations. For the first time, we study different templates with undamped oscillations or a bump from the two-point correlation function measured from BOSS DR12 galaxies constraining the amplitude of the features to be at most a few percent. Constraints are competitive to the ones obtained with Planck DR3.
2023
Ballardini, M., Finelli, F., Marulli, F., Moscardini, L., Veropalumbo, A. (2023). New constraints on primordial features from the galaxy two-point correlation function. PHYSICAL REVIEW D, 107(4), 1-7 [10.1103/PhysRevD.107.043532].
Ballardini, M; Finelli, F; Marulli, F; Moscardini, L; Veropalumbo, A
File in questo prodotto:
File Dimensione Formato  
ballardini_2023.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per accesso libero gratuito
Dimensione 2.41 MB
Formato Adobe PDF
2.41 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/951865
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 7
social impact