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ASC GRAstro_SpaceTime Arrangement
- ADM_Constraints
GRA status : approved
Mark Miller
Constraint evaluators in general relativity.
ADM_Constraints computes the Hamiltonian (1) and
momentum (3) constraints as functions of the standard
ADM variables, the 3-metric (gxx, gxy, ...) and the
extrinsic curvature (kxx, kxy, ...).
- IVP
GRA status : approved
Mark Miller
Solves the constraints in general relativity in full
3D following the York-Lichnerowicz decomposition.
Solves the Hamiltonian (1) and momentum (3) constraints,
using the input metric and extrinsic curvature as
the initial conformal data. Works with matter
through the MAHC thorns. See 'Kinematics and Dynamics
of General Relativity' by J. York in 'Sources of
Gravitational Radiation' ed. L. Smarr for equation
details.
- MinDist_Shift
GRA status : approved
Mark Miller
Solves the Minimal Distortion Shift equations.
Using BAM_Elliptic for the multigrid driver, MinDist_Shift
solves the minimal distortion shift equations.
- conf_adm
GRA status : approved
Mark Miller
Solves the spacetime equations of general relativity in the conformal-traceless 3+1 form.
conf_adm is a discretized solver for the spacetime equations
in general relativity using the conformal-traceless form
of the 3+1 equations. It is fully coupled to the matter
equation solver (MAHC) in a second order (in both space
and time) way.
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