Pith Number

pith:VJAJFZ4O

pith:2026:VJAJFZ4O3EJFEHAB2MFZ34WEHJ

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Collective dynamics of active matter with orientation-weighted alignment

Alexander Yakimenko, Bohdan Dobosh

A simple orientation-weighted alignment rule generates multiple collective regimes in self-propelled particles by tuning its strength alone.

arxiv:2605.17627 v1 · 2026-05-17 · cond-mat.soft · nlin.PS

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4 Citations open

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Claims

C1strongest claim

Tuning the alignment strength produces several distinct collective regimes, including disordered gas-like motion, coherent flocking, jammed high-density states, and densely ordered moving clusters with active-crystal-like behavior. These results show that a simple local alignment rule can generate a broad range of nonequilibrium collective dynamics within a single microscopic model.

C2weakest assumption

The model assumes that the alignment interaction is strictly orientation-weighted and acts exactly along the line connecting neighboring particles; if this geometric and directional weighting is not physically realized or if boundary/periodic conditions dominate the observed phases, the claimed breadth of regimes would not follow from the stated rule.

C3one line summary

An agent-based model with orientation-weighted velocity-dependent alignment generates disordered, flocking, jammed, and active-crystal-like collective phases by varying alignment strength.

References

38 extracted · 38 resolved · 0 Pith anchors

[1] Ramaswamy, The mechanics and statistics of active matter, Annual Review of Condensed Matter Physics1, 323 (2010) 2010

[2] ´Etienne Fodor and M. C. Marchetti, The statistical physics of active matter: From self-catalytic colloids to living cells, Physica A: Statistical Mechanics and its Ap- plications504, 106 (2018), lect 2018

[3] M. C. Marchetti, J.-F. Joanny, S. Ramaswamy, T. B. Liverpool, J. Prost, M. Rao, and R. A. Simha, Hydrody- namics of soft active matter, Rev. Mod. Phys.85, 1143 (2013) 2013

[4] T. Sanchez, D. T. N. Chen, S. J. DeCamp, M. Heymann, and Z. Dogic, Spontaneous motion in hierarchically as- sembled active matter, Nature491, 431 (2012) 2012

[5] A. Bricard, J.-B. Caussin, N. Desreumaux, O. Dauchot, and D. Bartolo, Emergence of macroscopic directed mo- tion in populations of motile colloids, Nature503, 95 (2013) 2013

Receipt and verification

First computed	2026-05-20T00:04:49.410237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa4092e78ed912521c01d30b9df2c43a61cd9a86162104858571542dd29a5315

Aliases

arxiv: 2605.17627 · arxiv_version: 2605.17627v1 · doi: 10.48550/arxiv.2605.17627 · pith_short_12: VJAJFZ4O3EJF · pith_short_16: VJAJFZ4O3EJFEHAB · pith_short_8: VJAJFZ4O

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/VJAJFZ4O3EJFEHAB2MFZ34WEHJ \
  | 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: aa4092e78ed912521c01d30b9df2c43a61cd9a86162104858571542dd29a5315

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df4be56fd42ff0019219aea3461ed73afb510dcda314ca6c3342225c0a6fe5d6",
    "cross_cats_sorted": [
      "nlin.PS"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2026-05-17T19:48:32Z",
    "title_canon_sha256": "d8854d7dd699be4ac0fb63edf19eb6b3fd760f0fde036ce318df877a483b5d32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17627",
    "kind": "arxiv",
    "version": 1
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}