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SUMMARY:N-Body Simulations for the Effective Field Theory of Dark Energy w
 ith PySCo-EFT and ECOSMOG-EFT
DTSTART:20260407T090000Z
DTEND:20260407T100000Z
DTSTAMP:20260515T052500Z
UID:indico-event-137@indico.iap.fr
DESCRIPTION:Speakers: Himanish Ganjoo (LUX/Observatoire de Paris-Meudon)\n
 \nLarge-scale structure surveys can serve as cosmological laboratories for
  testing modified gravity theories\, which provide viable explanations for
  the accelerated expansion of the late-time universe. Testing these theori
 es using upcoming survey data requires accurate predictions of structure f
 ormation on galaxy scales. We developed two N-body codes\, the Python-base
 d PySCo-EFT and the RAMSES-based ECOSMOG-EFT\,  for simulating modified g
 ravity theories in the EFT of Dark Energy formalism\, which codifies a hos
 t of models using a few physically relevant parameters. Our codes incorpor
 ate Vainshtein screening to account for the effects of MG theories on inte
 rmediate and nonlinear scales. We present validation tests comparing the t
 wo codes and a suite of convergence tests for ECOSMOG-EFT. Additionally\, 
 we demonstrate the impact of the EFTofDE parameters and the screening on t
 he matter power spectrum with a set of simulations. The results show sub-p
 ercent level correspondence between the two codes and are robust to variat
 ions in numerical parameters for linear and quasi-linear scales\, providin
 g two excellent tools for generating predictions to constrain modified gra
 vity theories using large-scale structure data.\n\nhttps://indico.iap.fr/e
 vent/137/
LOCATION:Amphithéâtre Henri Mineur (IAP)
URL:https://indico.iap.fr/event/137/
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