Pith Number

pith:JSS5QPY6

pith:2026:JSS5QPY6ZXK347QT2WRQMVMXRZ

not attested not anchored not stored refs pending

ACWM-Phys: Investigating Generalized Physical Interaction in Action-Conditioned Video World Models

Haotian Xue, Lama Moukheiber, Liqian Ma, Yipu Chen, Yongxin Chen, Yuchen Zhu, Zelin Zhao

Out-of-distribution generalization in action-conditioned world models succeeds on simple rigid interactions but drops on deformable and high-dimensional cases.

arxiv:2605.08567 v2 · 2026-05-09 · cs.CV

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\usepackage{pith}
\pithnumber{JSS5QPY6ZXK347QT2WRQMVMXRZ}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

OoD generalization depends not only on the physical regime but also on effective task complexity: models generalize well on visually simple, low-dimensional interactions with clear geometric structure, but suffer larger drops on deformable contacts, high-dimensional control, and complex articulated motion.

C2weakest assumption

That the fully controllable simulator accurately captures the rich physical interactions required for generalized world understanding and that the chosen action space and data protocols expose the true limits of current models rather than simulator artifacts.

C3one line summary

ACWM-Phys benchmark shows action-conditioned world models generalize on simple geometric interactions but drop sharply on deformable contacts, high-dimensional control, and complex articulated motion, indicating reliance on visual appearance over learned physics.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:02:12.733733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ca5d83f1ecdd5be7e13d5a30655978e74b1adf06925ca85b61951ff61071289

Aliases

arxiv: 2605.08567 · arxiv_version: 2605.08567v2 · doi: 10.48550/arxiv.2605.08567 · pith_short_12: JSS5QPY6ZXK3 · pith_short_16: JSS5QPY6ZXK347QT · pith_short_8: JSS5QPY6

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JSS5QPY6ZXK347QT2WRQMVMXRZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4ca5d83f1ecdd5be7e13d5a30655978e74b1adf06925ca85b61951ff61071289

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0915f1e26d8d276b03a02d4f7e3d2c4bb7a9e48a8775249cedac8d386349765",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-09T00:00:47Z",
    "title_canon_sha256": "6213f41c9dc6708847fe33372b83d93063653fb3ec4ccedb82bc15255d6b4ebc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.08567",
    "kind": "arxiv",
    "version": 2
  }
}