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Journal Articles Astron.Astrophys. Year : 2024

$Euclid$: The search for primordial features

M Ballardini , Y Akrami , F Finelli , D Karagiannis , B Li , Y Li , Z Sakr (1) , D Sapone , A Achúcarro , M Baldi , N Bartolo , G Cañas-Herrera , S Casas , R Murgia , H.-A Winther , M Viel , A Andrews , J Jasche (2) , G Lavaux (2) , D.K Hazra , D Paoletti , J Valiviita , A Amara , S Andreon , N Auricchio , P Battaglia , D Bonino , E Branchini , M Brescia , J Brinchmann , S Camera , V Capobianco , C Carbone , J Carretero , M Castellano , S Cavuoti , A Cimatti , G Congedo , L Conversi (3) , Y Copin (4) , L Corcione , F Courbin , H.M Courtois (4) , A da Silva , H Degaudenzi , F Dubath , X Dupac , M Farina , S Farrens (5) , M Frailis , E Franceschi , M Fumana , S Galeotta , B Gillis , C Giocoli , A Grazian , F Grupp , S.V.H Haugan , W Holmes , F Hormuth , A Hornstrup , P Hudelot (2) , K Jahnke , S Kermiche (6) , A Kiessling , M Kunz , H Kurki-Suonio , P.B Lilje , V Lindholm , I Lloro , E Maiorano , O Mansutti , O Marggraf , N Martinet (7) , F Marulli , R Massey , E Medinaceli , S Mei (8) , Y Mellier (2) , M Meneghetti , E Merlin , G Meylan , M Moresco , L Moscardini , E Munari , S.-M Niemi , C Padilla , S Paltani , F Pasian , K Pedersen , W.J Percival , V Pettorino (5) , S Pires (5) , G Polenta , M Poncet (9) , L.A Popa , L Pozzetti , F Raison , A Renzi , J Rhodes , G Riccio , E Romelli , M Roncarelli , R Saglia , B Sartoris , T Schrabback , A Secroun (6) , G Seidel , S Serrano , C Sirignano , G Sirri , L Stanco , J.-L Starck (5) , C Surace (7) , P Tallada-Crespí , A.N Taylor , I Tereno , R Toledo-Moreo , F Torradeflot , I Tutusaus (1) , E.A Valentijn , L Valenziano , T Vassallo , A Veropalumbo , Y Wang , J Weller , G Zamorani , J Zoubian (6) , V Scottez (2, 10)
M Ballardini
  • Function : Author
Y Akrami
  • Function : Author
F Finelli
  • Function : Author
D Karagiannis
  • Function : Author
B Li
  • Function : Author
Y Li
  • Function : Author
D Sapone
  • Function : Author
A Achúcarro
  • Function : Author
M Baldi
  • Function : Author
N Bartolo
  • Function : Author
G Cañas-Herrera
  • Function : Author
S Casas
  • Function : Author
R Murgia
  • Function : Author
H.-A Winther
  • Function : Author
M Viel
  • Function : Author
A Andrews
  • Function : Author
G Lavaux
D.K Hazra
  • Function : Author
D Paoletti
  • Function : Author
J Valiviita
  • Function : Author
A Amara
  • Function : Author
S Andreon
  • Function : Author
N Auricchio
  • Function : Author
P Battaglia
  • Function : Author
D Bonino
  • Function : Author
E Branchini
  • Function : Author
M Brescia
  • Function : Author
J Brinchmann
  • Function : Author
S Camera
  • Function : Author
V Capobianco
  • Function : Author
C Carbone
  • Function : Author
J Carretero
  • Function : Author
M Castellano
  • Function : Author
S Cavuoti
  • Function : Author
A Cimatti
  • Function : Author
G Congedo
  • Function : Author
L Corcione
  • Function : Author
F Courbin
  • Function : Author
A da Silva
  • Function : Author
H Degaudenzi
  • Function : Author
F Dubath
  • Function : Author
X Dupac
  • Function : Author
M Farina
  • Function : Author
M Frailis
  • Function : Author
E Franceschi
  • Function : Author
M Fumana
  • Function : Author
S Galeotta
  • Function : Author
B Gillis
  • Function : Author
C Giocoli
  • Function : Author
A Grazian
  • Function : Author
F Grupp
  • Function : Author
S.V.H Haugan
  • Function : Author
W Holmes
  • Function : Author
F Hormuth
  • Function : Author
A Hornstrup
  • Function : Author
K Jahnke
  • Function : Author
A Kiessling
  • Function : Author
M Kunz
  • Function : Author
H Kurki-Suonio
  • Function : Author
P.B Lilje
  • Function : Author
V Lindholm
  • Function : Author
I Lloro
  • Function : Author
E Maiorano
  • Function : Author
O Mansutti
  • Function : Author
O Marggraf
  • Function : Author
F Marulli
  • Function : Author
R Massey
  • Function : Author
E Medinaceli
  • Function : Author
M Meneghetti
  • Function : Author
E Merlin
  • Function : Author
G Meylan
  • Function : Author
M Moresco
  • Function : Author
L Moscardini
  • Function : Author
E Munari
  • Function : Author
S.-M Niemi
  • Function : Author
C Padilla
  • Function : Author
S Paltani
  • Function : Author
F Pasian
  • Function : Author
K Pedersen
  • Function : Author
W.J Percival
  • Function : Author
G Polenta
  • Function : Author
L.A Popa
  • Function : Author
L Pozzetti
  • Function : Author
F Raison
  • Function : Author
A Renzi
  • Function : Author
J Rhodes
  • Function : Author
G Riccio
  • Function : Author
E Romelli
  • Function : Author
M Roncarelli
  • Function : Author
R Saglia
  • Function : Author
B Sartoris
  • Function : Author
T Schrabback
  • Function : Author
G Seidel
  • Function : Author
S Serrano
  • Function : Author
C Sirignano
  • Function : Author
G Sirri
  • Function : Author
L Stanco
  • Function : Author
P Tallada-Crespí
  • Function : Author
A.N Taylor
  • Function : Author
I Tereno
  • Function : Author
R Toledo-Moreo
  • Function : Author
F Torradeflot
  • Function : Author
E.A Valentijn
  • Function : Author
L Valenziano
  • Function : Author
T Vassallo
  • Function : Author
A Veropalumbo
  • Function : Author
Y Wang
  • Function : Author
J Weller
  • Function : Author
G Zamorani
  • Function : Author

Abstract

Primordial features, in particular oscillatory signals, imprinted in the primordial power spectrum of density perturbations represent a clear window of opportunity for detecting new physics at high-energy scales. Future spectroscopic and photometric measurements from the $Euclid$ space mission will provide unique constraints on the primordial power spectrum, thanks to the redshift coverage and high-accuracy measurement of nonlinear scales, thus allowing us to investigate deviations from the standard power-law primordial power spectrum. We consider two models with primordial undamped oscillations superimposed on the matter power spectrum, one linearly spaced in $k$-space the other logarithmically spaced in $k$-space. We forecast uncertainties applying a Fisher matrix method to spectroscopic galaxy clustering, weak lensing, photometric galaxy clustering, cross correlation between photometric probes, spectroscopic galaxy clustering bispectrum, CMB temperature and $E$-mode polarization, temperature-polarization cross correlation, and CMB weak lensing. We also study a nonlinear density reconstruction method to retrieve the oscillatory signals in the primordial power spectrum. We find the following percentage relative errors in the feature amplitude with $Euclid$ primary probes for the linear (logarithmic) feature model: 21% (22%) in the pessimistic settings and 18% (18%) in the optimistic settings at 68.3% confidence level (CL) using GC$_{\rm sp}$+WL+GC$_{\rm ph}$+XC. Combining all the sources of information explored expected from $Euclid$ in combination with future SO-like CMB experiment, we forecast ${\cal A}_{\rm lin} \simeq 0.010 \pm 0.001$ at 68.3% CL and ${\cal A}_{\rm log} \simeq 0.010 \pm 0.001$ for GC$_{\rm sp}$(PS rec + BS)+WL+GC$_{\rm ph}$+XC+SO-like both for the optimistic and pessimistic settings over the frequency range $(1,\,10^{2.1})$.
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hal-04237840 , version 1 (19-04-2024)

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M Ballardini, Y Akrami, F Finelli, D Karagiannis, B Li, et al.. $Euclid$: The search for primordial features. Astron.Astrophys., 2024, 683, pp.A220. ⟨10.1051/0004-6361/202348162⟩. ⟨hal-04237840⟩
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