| | --- |
| | license: mit |
| | --- |
| | |
| | # Physics Steering: Causal Control of Cross-Domain Concepts in a Physics Foundation Model |
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| | [](https://opensource.org/licenses/MIT) |
| | [](https://github.com/DJ-Fear/walrus_steering) |
| | [](https://arxiv.org/abs/2511.20798) |
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| | This checkpoint contains weights for the [Walrus](https://huggingface.co/polymathic-ai/walrus) physics foundation model, fine-tuned and used for activation steering experiments described in *Physics Steering: Causal Control of Cross-Domain Concepts in a Physics Foundation Model* — [arXiv:2511.20798v2](https://arxiv.org/abs/2511.20798). |
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| | The base Walrus model is a 1.3B-parameter space–time Transformer trained on 19 physical simulation datasets. See the main [Walrus repo](https://github.com/PolymathicAI/walrus) for full details on the architecture and pretraining. |
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| | ## Usage |
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| | Download the checkpoint and point your config at it: |
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| | ```bash |
| | huggingface-cli download DJ-Fear/walrus_steering coalesced.pth --local-dir ./checkpoint/ |
| | ``` |
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| | Then set `load_checkpoint_path` to the folder containing the downloaded `coalesced.pth`. |
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