Pith Number

pith:JQJ2754V

pith:2026:JQJ2754VHNCN77C42PGOYBJKTP

not attested not anchored not stored refs pending

Cavity-Induced Excitonic Insulation and Non-Fermi-Liquid Behavior in Dirac Materials

Yuto Ashida, Yuxuan Guo

Cavity-mediated long-range interactions turn two-dimensional Dirac fermions into an excitonic insulator below a critical flavor number or a non-Fermi liquid above it.

arxiv:2605.10652 v2 · 2026-05-11 · cond-mat.str-el

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\pithnumber{JQJ2754VHNCN77C42PGOYBJKTP}

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Record completeness

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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

For a fermion flavor number N_f below a critical value N_c=16/π, the interaction drives an excitonic insulating phase through an infinite-order quantum phase transition and spontaneously generates a mass gap. At N_f > N_c the system remains gapless but enters a non-Fermi-liquid critical regime.

C2weakest assumption

The combination of static electronic screening with a Dyson-Schwinger analysis accurately captures the cavity-induced interaction in the deep-subwavelength limit without significant dynamic screening or higher-order vertex corrections.

C3one line summary

Cavity-mediated long-range interactions in Dirac materials induce an excitonic insulating phase below N_f = 16/π or a non-Fermi-liquid state with vanishing quasiparticle residue above it.

Formal links

3 machine-checked theorem links

Receipt and verification

First computed	2026-05-21T01:04:27.496356Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c13aff7953b44dffc5cd3ccec052a9bd812bfcd93db69923e09a94f48451dea

Aliases

arxiv: 2605.10652 · arxiv_version: 2605.10652v2 · doi: 10.48550/arxiv.2605.10652 · pith_short_12: JQJ2754VHNCN · pith_short_16: JQJ2754VHNCN77C4 · pith_short_8: JQJ2754V

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/JQJ2754VHNCN77C42PGOYBJKTP \
  | 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: 4c13aff7953b44dffc5cd3ccec052a9bd812bfcd93db69923e09a94f48451dea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e71f0e61fc559a8094af7b498c73788fbd44b9a331a5d7af92374d9904eeaf7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2026-05-11T14:37:12Z",
    "title_canon_sha256": "8c53c5254802e8e4675d60e1555608970349a07b523a525dccc9be3944e22025"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.10652",
    "kind": "arxiv",
    "version": 2
  }
}