General Relativity Python Packages

nrpypn

NRPyPN: Validated Post-Newtonian Expressions for Numerical Relativity

einsteinpy

Repository for the EinsteinPy core package :rocket:

coordinate-system

High-performance 3D coordinate system, differential geometry, and CFUT topological physics library with universal validation framework

qnm

Python package for computing Kerr quasinormal mode frequencies, separation constants, and spherical-spheroidal mixing coefficients

phg-vis

Coordinate transformations play a pivotal role in computer graphics, robotics, and the broader domains of mathematics and physics. This project introduces a novel computable coordinate system object that bridges the gap between theoretical frameworks and numerical computations.

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General Relativity Utilities in Python

xact-py

Native Julia port of the xAct (xact.es) tensor algebra suite for general relativity — canonicalization, contraction, covariant derivatives, perturbation theory, and Riemann invariants

pytearcat

A package to perform tensor algebra calculations.

helix-hamiltonian

A first-principles Hamiltonian framework realizing the 'Knot-in-Time' ontology. Unifies topological physics, general relativity, and sovereign AI governance.

ptafast

Python package for generating the overlap reduction function---stochastic gravitational wave background spatial correlation---and simulating a Gaussian SGWB signal in pulsar timing arrays

gtrpy

GTRPy is a GUI based application that allows users to perform Tensor and 6 different type of field operations in both 3D and 4D

pystein

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autograv

Automatic differentiation for numerical relativity using JAX

geodpy

Library that calculates geodesics (orbits) using any metric compatible with General Relativity.

einsteinpy-geodesics

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mileva

Python toolkit for symbolic computations in General Relativity.

riccipy

A tensor algebra calculator for General Relativity