Cosmological Parameters: params_lcdmw5.txt

MPGRAFIC Input File: mpgrafic_input_lcdmw5.dat

Matter Power Spectrum: pk_lcdmw5.dat

RAMSES Input File: ramses_input_lcdmw5.dat

File Description:

param_xxxxx.txt

h : reduced Hubble constant, H₀ / (100 km/s/Mpc)
Ω_m: matter density
Ω_b: baryon density (used to compute initial power spectrum)
Ω_r: radiation density

n_s: spectral index
σ₈: linear rms of density fluctuations at z=0 smoothed in sphere of 8 Mpc/h radius

w: constant equation of state (for wcdm models)
α: slope of the scalar potential (for quintessence models)

---

mpgrafic_input_xxxxx.dat

a, dlna/dτ_s/(H0/100), D₊, dlnD₊/dlna

where a is the scale factor in the range 0.0001 < a < 1, τ_s is the superconformal time (= integral of dt/a²), D₊ is the linear growth factor (normalized to 1 at z=0)

---

pk_xxxxx.dat

k, P(k)

where k is the wavenumber in units Mpc^-1 h and P(k) the linear matter power spectrum at z = 0 in units (Mpc/h)³

---

ramses_input_xxxxx.dat

a, H/H₀, τ_s*H₀, t_lookback*H₀, t_proper*H₀

where a is the scale factor, H is the Hubble rate defined as H = 1/a * da/dτ_s with τ_s being the superconformal time (= integral of dt/a²), t_lookback is the look-back time and t_proper is the proper time (= integral of dt/a)