  The accurate description of non-ideal quantum many-body systems is of prime
importance for a host of applications within physics, quantum chemistry,
material science, and related disciplines. At finite temperatures, the gold
standard is given by \textit{ab initio} path integral Monte Carlo (PIMC)
simulations, which do not require any empirical input, but exhibit an
exponential increase in the required compute time for fermionic systems with
increasing the system size $N$. Very recently, it has been suggested to compute
fermionic properties without this bottleneck based on PIMC simulations of
fictitious identical particles. In the present work, we use this technique to
carry out very large ($N\leq1000$) PIMC simulations of the warm dense electron
gas and demonstrate that it is capable of providing a highly accurate
description of investigated properties, i.e., the static structure factor, the
static density response function, and local field correction, over the entire
range of length scales.
