Adding Long‐Wavelength Modes to an<i>N</i>‐Body Simulation
Adding Long‐Wavelength Modes to an<i>N</i>‐Body Simulation
We present a new method to add long-wavelength power to an evolved N-body simulation, making use of the Zeldovich approximation to change positions and velocities of particles. We describe the theoretical framework of our technique and apply it to a P3M cosmological simulation performed on a cube of 100 Mpc …