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cmbant / CosmoMC

MCMC parameter sampling code
https://cosmologist.info/cosmomc/
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Wl weyl #17

Closed mraveri closed 5 years ago

mraveri commented 5 years ago

Indented the source/wl.f90 file. Implemented function to write to file wl theory prediction. Added Weyl transfer function to computation of cross correlation. From basic testing the modification seems to work.

cmbant commented 5 years ago

Thanks for the changes. Is it valid in general dark energy models to assume the Weyl cross delta spectrum is equal to the geometric mean of the autospectra (i.e. they are fully correlated)? You could get the cross-spectrum directly e.g. using adding a

Transfer_GetUnsplinedPower(State,State%MT, PK,transfer_Weyl,transfer_power_var,hubble_units=.false.)

in Calculator_CAMB.f90 etc.

mraveri commented 5 years ago

Yes, I had the same doubt. I don’t think it is. This seems a better solution. Will implement it now!

Il giorno 25 feb 2019, alle ore 16:28, Antony Lewis notifications@github.com ha scritto:

Thanks for the changes. Is it valid in general dark energy models to assume the Weyl cross delta spectrum is equal to the geometric mean of the autospectra (i.e. they are fully correlated)? You could get the cross-spectrum directly e.g. using adding a

Transfer_GetUnsplinedPower(State,State%MT, PK,transfer_Weyl,transfer_power_var,hubble_units=.false.) in Calculator_CAMB.f90 etc.

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