I have been using your 'Camb' code to calculate transfer functions for my research. I am interested in calculation of [tex]T_{SW}(k)[/tex] and [tex]T_{D}(k)[/tex] where these are SachsWolfe and Doppler terms as given in Eq. (7.3.58) DAMPT lectures on cosmology (http://www.damtp.cam.ac.uk/user/db275/Cosmology2015.pdf) so can you help me with that.
I also wanted to know the units of Camb code output velocity transfer functions [tex]vel/k^2[/tex] and if one multiplies [tex]vel/k^2[/tex] by [tex]k^2[/tex] then what will be the units of [tex]vel[/tex] Transfer functions 11, 12 13.
SachsWolfe and Doppler Transfer Functions

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 Joined: January 05 2017
 Affiliation: University of Alberta

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Re: SachsWolfe and Doppler Transfer Functions
You can get individual terms for the sources by commenting appropriately the terms in output() in equations.f90. Doppler and ISW terms are already there (commented or not).
The transfer functions should be dimensionless (and normalized for unit initial superhorizon curvature perturbation).
The transfer functions should be dimensionless (and normalized for unit initial superhorizon curvature perturbation).

 Posts: 7
 Joined: January 05 2017
 Affiliation: University of Alberta
SachsWolfe and Doppler Transfer Functions
So how can i access to value of Doppler term, as I have uncommented the code in output() but i don't see any new result in transfer_function output file. How can I output the doppler term in the transfer function output file.
Secondly, is there any way one can calculate the transfer function without the comoving perturbations [tex]\mathcal{R}_k[/tex] part as in Eq. 7.3.58 of Dampt lectures, [tex]\Theta (k,\hat{n})= [T_{SW}(k)+i \cos(\theta)T_{D}(k)] \mathcal{R}_k[/tex], as I just need [tex]T_{D}[/tex] and [tex]T_{SW}[/tex]. You see, I calculate the power spectrum for the comoving perturbations using my own model (code) and I only need the [tex]T_{SW}[/tex] and [tex]T_{D}[/tex] part of the transfer functions.
Secondly, is there any way one can calculate the transfer function without the comoving perturbations [tex]\mathcal{R}_k[/tex] part as in Eq. 7.3.58 of Dampt lectures, [tex]\Theta (k,\hat{n})= [T_{SW}(k)+i \cos(\theta)T_{D}(k)] \mathcal{R}_k[/tex], as I just need [tex]T_{D}[/tex] and [tex]T_{SW}[/tex]. You see, I calculate the power spectrum for the comoving perturbations using my own model (code) and I only need the [tex]T_{SW}[/tex] and [tex]T_{D}[/tex] part of the transfer functions.