ppf doc

AdamOrmondroyd · Jun 13, 2024 · 45d1c3d · 45d1c3d
1 parent 9c7e757
commit 45d1c3d
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/camb/dark_energy.py b/camb/dark_energy.py
@@ -113,6 +113,9 @@ class DarkEnergyPPF(DarkEnergyEqnOfState):
     (`arXiv:0808.3125 <https://arxiv.org/abs/0808.3125>`_)
     Use inherited methods to set parameters or interpolation table.
 
+    Note PPF is not a physical model and just designed to allow crossing -1 in an ad hoc way. For models
+    with w>-1 but far from cosmological constant, it can give quite different answers to the well-defined fluid model.
+
     """
     # cannot declare c_Gamma_ppf directly here as have not defined all fields in DarkEnergyEqnOfState (TCubicSpline)
     _fortran_class_module_ = 'DarkEnergyPPF'