Physical or Conformal Metric

By default, IDAxiBrillBH generates initial data which uses a nontrivial static conformal factor (as defined by thorn StaticConformal). This initial data includes both the conformal factor and its 1st and 2nd spatial derivatives, so IDAxiBrillBH sets conformal_state to 3.

However, if the Boolean parameter generate_StaticConformal_metric is set to false, then IDAxiBrillBH generates a pure physical 3-metric (and sets conformal_state to 0). This is useful if you have other thorns which don't grok a conformal metric.