Pith Number

pith:EO2WECNK

pith:2026:EO2WECNKV5MX7NJONM5AH4BEBT

not attested not anchored not stored refs resolved

Acoustic Chirality

Alex J. Vernon, Konstantin Y. Bliokh

Elastic waves in isotropic media possess a conserved chirality arising from the imbalance between right- and left-handed transverse phonons.

arxiv:2605.13249 v2 · 2026-05-13 · physics.class-ph · cond-mat.mtrl-sci · cond-mat.other

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Claims

C1strongest claim

We reveal a previously unknown continuous symmetry and conservation law in the equations of linear isotropic elasticity, which describe the chirality of elastic waves. The integral chirality is determined by the population imbalance between right- and left-handed transverse phonons.

C2weakest assumption

The derivation assumes the standard linear isotropic elasticity equations are complete and that the chirality density can be unambiguously defined from the displacement field without additional constraints from boundaries or nonlinearity.

C3one line summary

A previously unknown symmetry in elasticity equations establishes chirality as a conserved quantity for elastic waves, set by the imbalance of right- and left-handed transverse phonons.

References

57 extracted · 57 resolved · 0 Pith anchors

[1] P´ alyi,Biological Chirality(Academic Press, 2019) 2019

[2] Helicity and singular structures in fluid dynamics, 2014

[3] M. E. Peskin and D. V. Schroeder,An Introduction to Quantum Field Theory(Addison-Wesley Pub. Co., 1995) 1995

[4] Existence of a New Conservation Law in Electromagnetic Theory, 1964

[5] An Invariance Property of the Free Elec- tromagnetic Field, 1965

Receipt and verification

First computed	2026-05-18T02:44:49.443543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23b56209aaaf597fb52e6b3a03f0240cda7a6905ca503fc922bd95413328af3a

Aliases

arxiv: 2605.13249 · arxiv_version: 2605.13249v2 · doi: 10.48550/arxiv.2605.13249 · pith_short_12: EO2WECNKV5MX · pith_short_16: EO2WECNKV5MX7NJO · pith_short_8: EO2WECNK

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EO2WECNKV5MX7NJONM5AH4BEBT \
  | 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: 23b56209aaaf597fb52e6b3a03f0240cda7a6905ca503fc922bd95413328af3a

Canonical record JSON

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  "metadata": {
    "abstract_canon_sha256": "0ecc79e0f97e7eccb5e95596b28a66cbb5cdb5cfa46b61352892c5832506b00c",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci",
      "cond-mat.other"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2026-05-13T09:33:18Z",
    "title_canon_sha256": "979a808b6093401d6abaade6d34c8ec6a6d591f1a20ea8799cdf567b9ab7dca5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13249",
    "kind": "arxiv",
    "version": 2
  }
}