Hi all,
I am currently trying to modify tensor pertrubation equation as described in equation (2) of https://arxiv.org/pdf/1605.03504.pdf and (1) in https://arxiv.org/abs/1408.2224. I am not familiar with how the notaions used in equation.f90, H_chi and shear, are related to the tensor amplitude I would like to calculate. I have checked camb notes and Antony's thesis but they did not solve my problems. Are there other references that might help me out? Thanks so much for your help!!
Best,
Yunan