Pith Number

pith:TXZL5MJB

pith:2026:TXZL5MJBRAID6E4FF6K2RZXULJ

not attested not anchored not stored refs resolved

Properties of black holes in non-linear electrodynamics

Ansh Gupta, Carlos J. Ram\'irez-Valdez, Lewis Croney, Ruth Gregory

Nonlinear electrodynamics charged black holes develop extra long-lived quasinormal modes from near-horizon changes.

arxiv:2604.14011 v2 · 2026-04-15 · hep-th · gr-qc

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\usepackage{pith}
\pithnumber{TXZL5MJBRAID6E4FF6K2RZXULJ}

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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

although these modifications near the horizon are screened from afar, they nonetheless lead to additional branches of quasinormal modes for the black hole that are longer lived than the canonical Einstein branches.

C2weakest assumption

The analytic charged black hole solutions recently reported in the literature are taken as given and physically relevant for a wide range of parameters in nonlinear electrodynamics (abstract opening sentence).

C3one line summary

Analytic charged black holes in nonlinear electrodynamics with non-monotonic lapse functions support stable light rings and additional longer-lived quasinormal modes compared to Einstein gravity.

References

63 extracted · 63 resolved · 27 Pith anchors

[1] M. Born and L. Infeld,Foundations of the new field theory,Proc. Roy. Soc. Lond. A 144(1934) 425 1934

[2] W. Heisenberg and H. Euler,Consequences of Dirac’s theory of positrons,Z. Phys. 98(1936) 714 1936

[3] S.W. Hawking and R. Penrose,The singularities of gravitational collapse and cosmology,Proc. Roy. Soc. Lond. A314(1970) 529 1970

[4] Wiltshire,Black holes in string-generated gravity models,Phys 1988

[5] E.S. Fradkin and A.A. Tseytlin,Nonlinear Electrodynamics from Quantized Strings, Phys. Lett. B163(1985) 123 1985

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:01:41.381014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9df2beb12188103f13852f95a8e6f45a47e30204b7a0ca494d8fac4fa945ace8

Aliases

arxiv: 2604.14011 · arxiv_version: 2604.14011v2 · doi: 10.48550/arxiv.2604.14011 · pith_short_12: TXZL5MJBRAID · pith_short_16: TXZL5MJBRAID6E4F · pith_short_8: TXZL5MJB

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/TXZL5MJBRAID6E4FF6K2RZXULJ \
  | 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: 9df2beb12188103f13852f95a8e6f45a47e30204b7a0ca494d8fac4fa945ace8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac9a4a9caa7f58ea5ea15094b2474a348642f290d2d34c68edcd2a2a9d23c38b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2026-04-15T15:56:46Z",
    "title_canon_sha256": "9ccaa033796e1bb887390ca894db74ee9feeba53e176532f9f5fb62ee7039332"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.14011",
    "kind": "arxiv",
    "version": 2
  }
}