[Users] SPH in einstein toolkit

[Jonah Miller]

Hi Phil,


I'm not sure what the status of SPH is in the ET (my guess is nothing
public), but there is a relativistic formulation of SPH for fixed
background spacetimes developed by Rosswog:

https://doi.org/10.1088/0264-9381/27/11/114108

In this picture, one would reconstruct the 4-metric from the 3-metric,
lapse, and shift to calculate the motion of the particles.


Best,

Jonah

On Tue, Sep 26, 2017 at 1:29 AM, Philip Chang <chang65 at uwm.edu> wrote:

> Dear developers,
>
> I saw that there was a discussion back in 2015 in regard to SPH in the
> Einstein toolkit.  Have any progress been made in this regard?  I am
> especially interested in how the sph particles move (and what it means
> to move) in a 3+1 split.
>
> Cheers,
>
> Phil Chang
>
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