Hi there,
I was wondering if someone has same doubt in camb.
As given some parameter range, dtauda or say grhoa2 or H^2 a^4 has negative values ,however, it does "not" make problem while it used for the integration for Angular diameter distance or Age of universe.
I think, if the parameter range gives negative dtauda at certain area it should have to be ruled out , otherwise age of universe which is calculated from dtauda cannot be correct..
Any thought?
Rockhee
camb, negative dtauda in equations.f90
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