Perturbation Theory Remixed: Improved Nonlinearity Modeling beyond Standard Perturbation Theory

Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2

We present a novel $n$EPT ($n$th-order Eulerian Perturbation Theory) scheme to model the nonlinear density field by the summation up to $n$th-order density fields in perturbation t…