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@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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