pyiron / pyiron/atomistics

Is isotropic minimization really what we want?

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Description

https://github.com/pyiron/atomistics/blob/c5482141f9b8a79d9e20f65e9e3f8352737a52ee/src/atomistics/calculators/lammps/commands.py#L17

As this page states, iso 0 means the sum of the diagonal components of the pressure tensor becomes zero, while aniso 0 means each of the diagonal components must become zero. Is iso 0 really what we want?

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  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at src/atomistics/calculators/lammps/commands.py#L17 and read the linked LAMMPS fix_box_relax documentation. Compare the meanings of iso 0 and aniso 0 against the intended minimization behavior, then seek a maintainer decision on which setting is correct. Done means the intended behavior is resolved and the issue specifies an actionable change.

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Assessment

Tech stack
python
Domain
tooling
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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