[Users] ML_ADMQuantities question

[Roland Haas]

Hello all,

there is, as far as I remember, not having looked at their code at all, 
ML_ADMConstraints that computes the constraints based on the ADM
variables (even though it is in the ML repo). Not sure if there are
grid functions that match what you are looking for though.

Yours,
Roland

> Wolfgang
> 
> I don't think such a thing exists.
> 
> It should be relatively straightforward to calculated the ADM
> quantities from the ADM variables. I also think this is how it should
> be done; I was surprised to see that it is done differently. After
> all, that's why we have the ADM variables -- as lingua franca so that
> thorns don't have too many interdependencies.
> 
> Do you need the ADM integrands everywhere or just on a 2-sphere? If
> the latter, then the thorn QuasiLocalMeasures could provide these.
> 
> -erik
> 
> 
> 
> On Tue, Apr 3, 2018 at 9:05 AM, Wolfgang Kastaun <physik at fangwolg.de>
> wrote:
> > Hi,
> >
> > I just started using the ML_ADMQuantities thorn (because I wanted
> > the ADM integrants, not just the integrals), and stumbled on two
> > issues:
> >
> > 1. It seems this thorn only works with ML_BSSN, is there a version
> > for ML_CCZ4 somewhere?
> >
> > 2. Madm and Jadm3 are declared as tensorweight=0 in the
> > interface.ccl, but it seems to me that they already include the
> > square root of the 3-metric determinant (at least I got the correct
> > ADM mass by just using the standard average reduction operator on
> > them for some test). Should that be tensorweight=1 instead?
> >
> > Cheers,
> > Wolfgang.
> >
> > _______________________________________________
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> > Users at einsteintoolkit.org
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> 
> 
> 



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