Public repository of the Cosmic Linear Anisotropy Solving System (master for the most recent version of the standard code; GW_CLASS to include Cosmic Gravitational Wave Background anisotropies; classnet branch for acceleration with neutral networks; ExoCLASS branch for exotic energy injection; class_matter branch for FFTlog)
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Divergence in matter power spectrum P(k) in IDM scenario toward high k #525
Dear all,
I found a strange behaviour of matter power spectrum in interacting dark matter (IDM) scenario. When the interacting coefficient a_dark is high enough, the P(k) I got just exceeds that of CDM when k is greater than tens of Mpc^-1, as shown below (blue and purple lines).
Actually, I'm trying to reproduce the results in Figure 1 in 1712.03976, and I'm not sure what’s going wrong.
FYI, the parameters I have changed from CDM is as follows:
f_idm = 1
m_idm = 1e9
xi_idr =0.5
stat_f_idr = 1
a_idm_dr = 0 / 1e2 / 1e3 / 4e5 / 6e4 / 1e6
nindex_idm_dr = 4
Dear all, I found a strange behaviour of matter power spectrum in interacting dark matter (IDM) scenario. When the interacting coefficient a_dark is high enough, the P(k) I got just exceeds that of CDM when k is greater than tens of Mpc^-1, as shown below (blue and purple lines).
Actually, I'm trying to reproduce the results in Figure 1 in 1712.03976, and I'm not sure what’s going wrong.
FYI, the parameters I have changed from CDM is as follows:
f_idm = 1
m_idm = 1e9
xi_idr =0.5
stat_f_idr = 1
a_idm_dr = 0 / 1e2 / 1e3 / 4e5 / 6e4 / 1e6
nindex_idm_dr = 4