Pith Number

pith:DSDMV3WY

pith:2026:DSDMV3WYBECKNV7HZKFJI5BL4X

not attested not anchored not stored refs pending

How nonlinear spectral back transfer limits the temporal coherency of zonal modes?

P H Diamond, Rameswar Singh

Nonlinear spectral back-transfer of energy from zonal modes to turbulence sets the limit on their temporal coherency.

arxiv:2604.03421 v2 · 2026-04-03 · physics.plasm-ph

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\usepackage{pith}
\pithnumber{DSDMV3WYBECKNV7HZKFJI5BL4X}

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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

nonlinear spectral back-transfer of free energy from zonal modes to turbulence sets the fundamental limit on the temporal coherency of the shearing field

C2weakest assumption

That the back-transfer observed in GENE gyrokinetic simulations is the dominant physical mechanism limiting zonal flow coherence in real collisionless plasmas, rather than other unmodeled effects such as collisions or boundary conditions.

C3one line summary

Nonlinear spectral back-transfer from zonal modes to turbulence limits shearing field coherence time, with suppression in negative triangularity plasmas increasing auto-coherence and Kubo number.

Receipt and verification

First computed	2026-06-05T01:14:37.893236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c86caeed80904a6d7e7ca8a94742be5e6e2ea2650a7aa3ffac0553524aac822

Aliases

arxiv: 2604.03421 · arxiv_version: 2604.03421v2 · doi: 10.48550/arxiv.2604.03421 · pith_short_12: DSDMV3WYBECK · pith_short_16: DSDMV3WYBECKNV7H · pith_short_8: DSDMV3WY

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/DSDMV3WYBECKNV7HZKFJI5BL4X \
  | 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: 1c86caeed80904a6d7e7ca8a94742be5e6e2ea2650a7aa3ffac0553524aac822

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bb9cf01cc6eb21a8af204fe1b39fbf6cec90af7193ce1f6751ebc39a81515fa",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.plasm-ph",
    "submitted_at": "2026-04-03T19:33:27Z",
    "title_canon_sha256": "82e1968ceadda1da57604e7d6e496e3885e65b3367c77f0b9c51ef04740611f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.03421",
    "kind": "arxiv",
    "version": 2
  }
}