Pith Number

pith:YO7QA3TN

pith:2026:YO7QA3TNY5XY5A3GRDFJ3A7RMJ

not attested not anchored not stored refs resolved

Two Protons, Two Positrons, and Four Electrons: Covalent Bond with van der Waals Characteristics

Alexandre Tkatchenko, Jorge Charry

The bond between two hydrogen anions in the PsH dimer arises from a single delocalized positronic orbital whose quantum correlations produce covalent character at van der Waals strength.

arxiv:2605.15099 v1 · 2026-05-14 · physics.chem-ph · quant-ph

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\usepackage{pith}
\pithnumber{YO7QA3TNY5XY5A3GRDFJ3A7RMJ}

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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

This positronic bonding stems from quantum correlations that resemble a single covalent bond formed between negatively charged pseudo-nuclei, but with a bond strength commensurate with the traditional van der Waals interaction.

C2weakest assumption

That the quantum Monte Carlo wavefunction accurately captures the delocalized positronic orbital and its collective dipole response without significant bias from the chosen nodal surface or finite-size effects.

C3one line summary

Positrons in the PsH dimer form a delocalized molecular orbital producing covalent-like bonding between hydrogen anions with van der Waals bond strength.

References

75 extracted · 75 resolved · 0 Pith anchors

[1] D. B ¨odeker, W. Buchm¨ uller, Baryogenesis from the weak scale to the grand unification scale. Rev. Mod. Phys.93(3), 035004 (2021) 2021

[2] A. Tkatchenko, D. V. Fedorov, Casimir self-interaction energy density of quantum electrody- namic fields.Phys. Rev. Lett.130(4), 041601 (2023) 2023

[3] S. D. Bass, S. Mariazzi, P. Moskal, E. Stepien, Positronium physics and biomedical applications. Rev. Mod. Phys.95(2), 021002 (2023) 2023

[4] D. W. Gidley, H.-G. Peng, R. S. Vallery, Positron annihilation as a method to characterize porous materials.Annu. Rev. Mater. Res.36(1), 49–79 (2006) 2006

[5] A. N. Singh, Positron annihilation spectroscopy in tomorrow’s material defect studies.Appl. Spectrosc. Rev.51(5), 359–378 (2016) 2016

Receipt and verification

First computed	2026-05-17T21:40:25.834355Z
Last reissued	2026-05-17T21:57:19.163532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

c3bf006e6dc76f8e836688ca9d83f1627762bc8044b07e5599c9ecb756958995

Aliases

arxiv: 2605.15099 · arxiv_version: 2605.15099v1 · pith_short_12: YO7QA3TNY5XY · pith_short_16: YO7QA3TNY5XY5A3G · pith_short_8: YO7QA3TN

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/YO7QA3TNY5XY5A3GRDFJ3A7RMJ \
  | 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: c3bf006e6dc76f8e836688ca9d83f1627762bc8044b07e5599c9ecb756958995

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b022d8d570ce87ff13bc295927aa3e0ad35c49066a1c86f5e899e12ee2bc4212",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2026-05-14T17:19:09Z",
    "title_canon_sha256": "307aad274c61ad36409647f95d0bd9e6d29aa361ec97fd5ee575c8d17bf6ae13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15099",
    "kind": "arxiv",
    "version": 1
  }
}