evo-dicke-wigner

evo-dicke-wigner is a skill for Claude Code, Codex from Zhang-Henry/CoEvoSkills. It costs 56 tokens per session (509 once invoked), scanned A, original, Apache-2.0.

A scientific computing skill for simulating an open Dicke model, a quantum model of interacting atoms and a cavity, and calculating the cavity field’s Wigner function, a way to visualize its quantum state. It uses QuTiP and its tools for collective spin systems.

In plain words
What is it for?
Use it to build the model, calculate steady states and Wigner functions, run the supplied cases, and validate the resulting CSV files.
Why use it?
It provides a defined calculation workflow for studying how losses and interactions affect this open quantum system.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to build the model, calculate steady states and Wigner functions, run the supplied cases, and validate the resulting CSV files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zhang-henry/coevoskills/evo-dicke-wigner
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Zhang-Henry/CoEvoSkills --skill evo-dicke-wigner
Clone the repo
git clone --depth 1 https://github.com/Zhang-Henry/CoEvoSkills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for evo-dicke-wigner

README.md
[![agentmods](https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-dicke-wigner/github.svg)](https://agentmods.dev/skills/zhang-henry/coevoskills/evo-dicke-wigner)
Your own site
<a href="https://agentmods.dev/skills/zhang-henry/coevoskills/evo-dicke-wigner"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-dicke-wigner/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for evo-dicke-wigner

Your own site · 80×15
<a href="https://agentmods.dev/skills/zhang-henry/coevoskills/evo-dicke-wigner"><img src="https://agentmods.dev/badge/skills/zhang-henry/coevoskills/evo-dicke-wigner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 509 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium analysis-evasion · line 1
    Suspicious Unicode normalization or mixed-script content
    Fix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00056 $0.00509
Opus 5 $0.00028 $0.00254
Sonnet 5 $0.00011 $0.00102
Haiku 4.5 $0.00006 $0.00051

Measured 12d ago against content hash 20e6124e664b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

evo-dicke-wigner scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/__init__.py, scripts/utils.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

artifacts/skills/quantum-numerical-simulation/evo-dicke-wigner/SKILL.md · 47 lines

What it actually says

Open Dicke Model Wigner Function Skill

This skill computes the steady-state Wigner function of the cavity field in an open Dicke model using QuTiP's PIQS module for collective spin operators.

Key Conventions

  • Uses PIQS Jx operator (not J+ + J-) with coupling g * (a + a†) ⊗ Jx
  • Builds spin Liouvillian with PIQS Dicke class including spin Hamiltonian
  • Combines cavity and spin Liouvillians with super_tensor
  • Adds interaction via spre/spost commutator
  • Cavity is subsystem 0 for partial trace

Usage

import sys
sys.path.insert(0, '/app/environment/skills/evo-dicke-wigner/scripts')
from utils import run_all_cases, validate_outputs

# Run all 4 cases and save CSVs
run_all_cases(output_dir='/root')

# Validate outputs
validate_outputs(output_dir='/root')

Functions

  • build_spin_hamiltonian(N, omega0) - Build ω₀Jz in Dicke basis
  • build_spin_liouvillian(N, omega0, ...) - Build spin Liouvillian with PIQS Dicke
  • build_cavity_liouvillian(omega_c, n_max, kappa) - Build cavity Liouvillian with loss
  • build_interaction_superop(N, n_max, g) - Build interaction superoperator
  • build_full_liouvillian(...) - Combine all parts into full Liouvillian
  • find_steady_state(L) - Find steady state density matrix
  • get_cavity_state(rho_ss, n_max, nds) - Trace out spins
  • compute_wigner(rho_cav, xvec, yvec) - Compute Wigner function
  • save_wigner_csv(W, filepath) - Save as CSV
  • run_case(...) - Run single case end-to-end
  • run_all_cases(output_dir) - Run all 4 cases
  • validate_outputs(output_dir) - Validate all outputs
Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 47 lines · 56 tokens per session scan A 20e6124e664b

Subscribe to this mod's changes

evo-dicke-wigner is a skill published in the GitHub repository Zhang-Henry/CoEvoSkills (66 stars, last pushed 22d ago), licensed Apache-2.0. It adds 56 tokens to every session and 509 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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