Newtonian motion gauges extend the validity of Newtonian EFTofLSS to scale-dependent growth and GR effects by transforming linear equations to Newtonian form, computing nonlinear clustering there, and transforming results back.
The observed galaxy power spectrum in General Relativity
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LIGER4GAL finds that omitting the finger-of-the-observer effect biases f_nl by more than 1 sigma in 40% of realizations for k_min=0.0015 h/Mpc scales.
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Effective Field Theory of Large Scale Structure and Newtonian Motion Gauges
Newtonian motion gauges extend the validity of Newtonian EFTofLSS to scale-dependent growth and GR effects by transforming linear equations to Newtonian form, computing nonlinear clustering there, and transforming results back.
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The impact of our peculiar motion on primordial non-Gaussianity measurements using the LIGER4GAL framework
LIGER4GAL finds that omitting the finger-of-the-observer effect biases f_nl by more than 1 sigma in 40% of realizations for k_min=0.0015 h/Mpc scales.