Cls numerical accuracy in CosmoMC
Posted: March 17 2016
Hi Antony,
I'm working on primordial magnetic fields and I have a CAMB code that works fine: compensated and passive modes are computed correctly. However as soon as I try to compute them in cosmomc, I face some issues. In particular the scalar compensated power spectrum appears to be full of spikes (I used the same parameters in CAMB and it produces a smooth power spectrum). I was wondering if cosmomc passes a different numerical accuracy to the camb subroutines (either CAMB_GetTransfers or CAMB_TransfersToPowers). If so, where are these parameters set?
Many thanks,
Alex Zucca
I'm working on primordial magnetic fields and I have a CAMB code that works fine: compensated and passive modes are computed correctly. However as soon as I try to compute them in cosmomc, I face some issues. In particular the scalar compensated power spectrum appears to be full of spikes (I used the same parameters in CAMB and it produces a smooth power spectrum). I was wondering if cosmomc passes a different numerical accuracy to the camb subroutines (either CAMB_GetTransfers or CAMB_TransfersToPowers). If so, where are these parameters set?
Many thanks,
Alex Zucca