I Numerical Relativity -- Software to solve the Einstein field equations?

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Numerical relativity software is essential for solving the Einstein field equations, with the Einstein Toolkit being a widely recommended option for simulations. Users inquire about the feasibility of utilizing MATLAB or coding in Python for exploring spacetimes, suggesting that custom coding is possible. The discussion humorously references older software preferences like MAXIMA, Perl, and Lisp among seasoned relativists. Additionally, the BHPToolkit is mentioned as a potentially useful resource, despite being a few years old. Overall, the conversation emphasizes the importance of specialized software in the field of numerical relativity.
dsaun777
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Hello,
Has anyone here used software to solve the Einstein field equations? If so, what software have you used, or what software do you recommend? Is it possible to use something like MATLAB to play around with the field equations?
 
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You can do whatever you want, because you can do some spacetimes by hand, so why wouldn't you be able to code that into python, etc? You can tell someone is an older relativist if they bring up MAXIMA (along with perl, and lisp) haha.

That being said, if you want to do "real" numerical relativity, most people use in the field use https://einsteintoolkit.org/ to simulate things.
 
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While looking for a paper in my bookmarks, I saw this: https://bhptoolkit.org/toolkit.html

It is a few years old, but should help.
 
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Thread 'Physical Interpretation of Frame Field'

Moderator's note: Spin-off from another thread due to topic change. In the second link referenced, there is a claim about a physical interpretation of frame field. Consider a family of observers whose worldlines fill a region of spacetime. Each of them carries a clock and a set of mutually orthogonal rulers. Each observer points in the (timelike) direction defined by its worldline's tangent at any given event along it. What about the rulers each of them carries ? My interpretation: each...
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