Pith Number

pith:MMLWVQVG

pith:2026:MMLWVQVG2OFJ2IEB7QGHTIRL3O

not attested not anchored not stored refs pending

Exploring the Boundaries of Differentiable Radiation Transport and Detector Simulation

David Lange, Jeffrey Krupa, Long Chen, Lukas Heinrich, Max Aehle, Max Sagebaum, Miaoyuan Liu, Michael Kagan, Mihaly Novak, Nicolas Gauger, Vassil Vassilev, Yiyang Zhao

Stopping gradient flow at unstable material boundaries yields usable derivatives for optimizing radiation detector designs.

arxiv:2605.06779 v2 · 2026-05-07 · physics.ins-det · hep-ex · hep-ph

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\usepackage{pith}
\pithnumber{MMLWVQVG2OFJ2IEB7QGHTIRL3O}

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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

We demonstrate that this enables stable, optimization-ready gradients in a detector-design problem.

C2weakest assumption

That the identifiable unstable conditions at boundaries can be detected reliably enough that stopping gradients there preserves useful optimization information without introducing bias or missing important sensitivities.

C3one line summary

Targeted halting of gradient flow at unstable material boundaries enables stable derivatives for optimizing detector designs in radiation transport simulations.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-04T01:08:50.921802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63176ac2a6d38a9d2081fc0c79a22bdba630b23addd0044d41ad09ff87cc35c0

Aliases

arxiv: 2605.06779 · arxiv_version: 2605.06779v2 · doi: 10.48550/arxiv.2605.06779 · pith_short_12: MMLWVQVG2OFJ · pith_short_16: MMLWVQVG2OFJ2IEB · pith_short_8: MMLWVQVG

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/MMLWVQVG2OFJ2IEB7QGHTIRL3O \
  | 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: 63176ac2a6d38a9d2081fc0c79a22bdba630b23addd0044d41ad09ff87cc35c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53a9e025812a84d5affa0c5c4a6a2c5011a20060169b89c1b651a9d6fd5f09a0",
    "cross_cats_sorted": [
      "hep-ex",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2026-05-07T18:00:02Z",
    "title_canon_sha256": "3655608d0c7321c62754030776fd98402dbd555987f6dd16d15e657488a02910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.06779",
    "kind": "arxiv",
    "version": 2
  }
}