Merger Tree Building

Below is a flowchart indicating the ingredients of Galacticus merger tree building algorithm. (Galacticus is highly modular - many different ingredients can be included and excluded - this is intended just as a typical example.)

        flowchart LR
   Builder[<a href='https://galacticus.readthedocs.io/en/latest/physics/mergerTreeBuilder.html' style='text-decoration: none'>Builder</a>]
   Masses[<a href='https://galacticus.readthedocs.io/en/latest/physics/mergerTreeBuildMassDistribution.html' style='text-decoration: none'>Mass Distribution</a>]
   Branching[<a href='https://galacticus.readthedocs.io/en/latest/physics/mergerTreeBranchingProbability.html' style='text-decoration: none'>Branching Distribution</a>]
   Excursion[<a href='https://galacticus.readthedocs.io/en/latest/physics/excursionSetFirstCrossing.html' style='text-decoration: none'>Excursion Set Solver</a>]
   Controller[<a href='https://galacticus.readthedocs.io/en/latest/physics/mergerTreeBuildController.html' style='text-decoration: none'>Controller</a>]
   Variance["<a href='https://galacticus.readthedocs.io/en/latest/physics/cosmologicalMassVariance.html' style='text-decoration: none'>σ(M)</a>"]
   Critical["<a href='https://galacticus.readthedocs.io/en/latest/physics/criticalOverdensity.html' style='text-decoration: none'>δ<sub>c</sub>(t)</a>"]
   Cosmology[<a href='https://galacticus.readthedocs.io/en/latest/physics/cosmologyParameters.html' style='text-decoration: none'>Cosmology</a>]
   Resolution[<a href='https://galacticus.readthedocs.io/en/latest/physics/mergerTreeMassResolution.html' style='text-decoration: none'>Resolution</a>]
   Cosmology --> Builder
   Masses --> Builder
   Controller --> Builder
   Branching --> Controller
   Excursion -.-> Branching
   Variance --> Builder
   Critical --> Builder
   Resolution --> Controller