Pith Number

pith:KXPDKNY2

pith:2026:KXPDKNY2GSOCIPBATB6SISHXY5

not attested not anchored not stored refs pending

Reassessing carotenoid photophysics -- new light on dark states

Andrew A. Pascal, Andrew Gall, Bruno Robert, Cristian Ilioaia, Juan Jose Romero, Manuel J. Llansola-Portoles, Roxanne Bercy, Viola Dmello

Femtosecond stimulated resonance Raman spectroscopy identifies the nature and symmetry of three distinct dark electronic states in carotenoids.

arxiv:2601.00316 v4 · 2026-01-01 · physics.chem-ph

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\usepackage{pith}
\pithnumber{KXPDKNY2GSOCIPBATB6SISHXY5}

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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

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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

Using femtosecond stimulated resonance Raman spectroscopy, where the vibrational contributions of each excited state can be observed selectively as a function of the Raman excitation, we reveal the nature and symmetry of no less than three different dark states.

C2weakest assumption

That selective vibrational signals observed at different Raman excitation wavelengths uniquely correspond to distinct dark electronic states without significant overlap, misassignment, or contributions from known bright states.

C3one line summary

Femtosecond stimulated resonance Raman spectroscopy identifies three distinct dark electronic states and their symmetries in carotenoids, resolving prior controversies.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-22T01:03:52.960891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55de35371a349c243c20987d2448f7c746b1ded7195e09fd583336888c1327e4

Aliases

arxiv: 2601.00316 · arxiv_version: 2601.00316v4 · doi: 10.48550/arxiv.2601.00316 · pith_short_12: KXPDKNY2GSOC · pith_short_16: KXPDKNY2GSOCIPBA · pith_short_8: KXPDKNY2

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/KXPDKNY2GSOCIPBATB6SISHXY5 \
  | 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: 55de35371a349c243c20987d2448f7c746b1ded7195e09fd583336888c1327e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcad348a19b117181367e73d4603c16bbe245c73bbcb81a06cbd85bcfb2b10d9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2026-01-01T11:50:43Z",
    "title_canon_sha256": "d72f0819c4a033333a332c726c0818a581ff1a03aea483aecbdb143f0cc83235"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.00316",
    "kind": "arxiv",
    "version": 4
  }
}