Pith Number

pith:R3TOJE27

pith:2026:R3TOJE27Q7TMWHQY5MQ6GH6O7A

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Entity -- Hardware-agnostic Particle-in-Cell Code for Plasma Astrophysics. III: Higher-order shape functions & generalized field stencils

Arno Vanthieghem, Damiano Caprioli, Evgeny A. Gorbunov, Hayk Hakobyan, Ludwig M. B\"oss

Entity PIC code adds up to 11th-order shape functions and tunable stencils to cut numerical artifacts in plasma simulations.

arxiv:2605.15260 v1 · 2026-05-14 · astro-ph.HE

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\pithnumber{R3TOJE27Q7TMWHQY5MQ6GH6O7A}

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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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Claims

C1strongest claim

Our updated current deposit scheme allows for up to 11th-order accurate interpolation, while the generalized stencils for the field solver can be tuned to suppress numerical dispersion. We perform extensive tests to ensure high accuracy of the implemented schemes for charge conservation, stabilization against numerical heating, improved energy conservation, and suppression of numerical Cherenkov effects.

C2weakest assumption

That the performance cost of higher-order interpolation and stencil tuning can be acceptably balanced against numerical resolution and current filtering while still enabling stable, accurate simulations of realistic multi-scale astrophysical plasmas (as discussed in the performance section of the abstract).

C3one line summary

Entity PIC code updated with up to 11th-order current deposit and generalized field stencils, with tests showing improved conservation properties and suppression of numerical effects.

References

92 extracted · 92 resolved · 1 Pith anchors

[1] Adams, L. C., Werner, G. R., & Cary, J. R. 2025, Physics of Plasmas, 32, 093905, doi: 10.1063/5.0271598 2025 · doi:10.1063/5.0271598

[2] Contemporary particle-in-cell approach to laser-plasma modelling 2015 · doi:10.1088/0741-3335/57/11/113001

[3] ApJ , author = 2022 · doi:10.3847/1538-4357/ac8a94

[4] Bacchini, F., Zhdankin, V., Gorbunov, E. A., et al. 2024, Phys. Rev. Lett., 133, 045202, doi: 10.1103/PhysRevLett.133.045202 2024 · doi:10.1103/physrevlett.133.045202

[5] M., & Spurzem, R 2004 · doi:10.1111/j.1365-2966.2004.08097.x

Receipt and verification

First computed	2026-05-20T00:00:49.114511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ee6e4935f87e6cb1e18eb21e31fcef827fb26e3a03c3e7594f57a96499ee4ac

Aliases

arxiv: 2605.15260 · arxiv_version: 2605.15260v1 · doi: 10.48550/arxiv.2605.15260 · pith_short_12: R3TOJE27Q7TM · pith_short_16: R3TOJE27Q7TMWHQY · pith_short_8: R3TOJE27

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/R3TOJE27Q7TMWHQY5MQ6GH6O7A \
  | 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: 8ee6e4935f87e6cb1e18eb21e31fcef827fb26e3a03c3e7594f57a96499ee4ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e906800fa6966264ff822f6d0f55704f688855e5327399ff815eab840e42f1a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-05-14T18:00:00Z",
    "title_canon_sha256": "00fddae120d35baf8a0f8569331cb0e3571287e87f686f36ed8aec883c97c75a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15260",
    "kind": "arxiv",
    "version": 1
  }
}