CAMB: tight coupling

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Dahee Lee
Posts: 16
Joined: April 16 2018
Affiliation: Kyungpook National University

CAMB: tight coupling

Post by Dahee Lee » November 19 2018

Hi.
I’m trying to turn off tight coupling, not second order tight coupling, but I couldn’t it.
I already know ‘second order tight coupling’ is logical and parameter statement in GaugeInterface.
Is it possible that turning off tight coupling in CAMB/equation.f90 ?

Any help would be appreciated.

Antony Lewis
Posts: 1522
Joined: September 23 2004
Affiliation: University of Sussex
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Re: CAMB: tight coupling

Post by Antony Lewis » November 19 2018

You'd have to edit the code to do that. However note that the general equations become stiff, and the default integrator does not work well with stiff equations.

Dahee Lee
Posts: 16
Joined: April 16 2018
Affiliation: Kyungpook National University

Re: CAMB: tight coupling

Post by Dahee Lee » November 19 2018

Thank you for replying!

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