---

name: physics-simulation-creator version: 1.1.0 description: > Create optimal physics simulations using Non-Newtonian Calculus (NNC) parameter tuning. Use for ANY physics simulation to maximize accuracy and minimize computational complexity. The k parameter optimizes numerical behavior - works for smooth problems AND singularities. Automatically detects if singularities exist and handles them appropriately. category: specialists tags:

• physics
• simulation
• numerical-methods
• optimization
• NNC
• scientific-computing
• accuracy author: meta-calculus-toolkit orchestration: primary_agent: coder-enhanced support_agents:
  • quantum-computing-researcher # Quantum physics, numerical algorithms
  • model-evaluation-agent # Rigorous accuracy comparison vs k=0
  • experiment-tracking-agent # Track simulation experiments
  • evaluator # Quality gate validation
  • root-cause-analyzer # Debug failed simulations
  • sublinear-goal-planner # Complex problem decomposition coordination: sequential mcp_servers: required: [memory-mcp] optional: [flow-nexus]

---

Physics Simulation Creator

Create optimal physics simulations with automatic parameter tuning using Non-Newtonian Calculus (NNC).

Overview

This skill helps AI agents create ANY numerical physics simulation with optimal accuracy and minimal computational complexity. The k parameter from NNC provides a tuning knob that:

1. Maximizes accuracy for your specific problem type
2. Minimizes computational steps needed for convergence
3. Handles singularities automatically (if present)

Key Insight: Classical calculus (k=0) is not always optimal. Different physics problems benefit from different k values - even smooth problems without singularities.

When to Use This Skill

ALWAYS USE FOR (Significant gains):

• Problems with singularities (1/r, 1/r^2, crack tips, etc.)
• Molecular dynamics (atomic scale, L ~ 1e-10 m)
• Quantum simulations near singularities (hydrogen atom)
• Fracture mechanics (crack tip singularities)
• Gravitational simulations (black holes, 1/r potentials)

USE FOR COMPUTATIONAL EFFICIENCY (Same accuracy, fewer steps):

• Large simulations on consumer hardware - 7-100x step reduction
• Long-time molecular dynamics (run 10x longer trajectories)
• Real-time physics in games/VR (same accuracy, faster)
• Parameter sweeps (run 10x more configurations)
• Stiff ODEs (dramatically fewer steps to converge)

CONSIDER USING FOR (Moderate accuracy gains):

• Microscale simulations (L < 1e-6 m)
• Ultra-high precision requirements (>6 digits)
• Rapid scale-change problems

k=0 IS OPTIMAL FOR (No NNC needed):

• Smooth quantum mechanics (harmonic oscillator)
• Human-scale engineering (1mm - 1km)
• Large-scale cosmology (smooth metrics)
• Problems with adequate engineering tolerance

The Process

1. Analyze problem -> Does it have singularities? What length scale?
2. Select optimal k -> For accuracy AND complexity, not just singularity handling
3. Generate code -> With NNC transforms at optimal k
4. Validate -> Compare accuracy vs classical (k=0)

Singularity Detection (Part of Process, Not the Only Use)

The skill automatically checks: "Does this problem have a singularity I need to watch out for?"

• If YES: k is tuned to handle it (e.g., k=-1 for 1/r)
• If NO: k is still optimized for accuracy/complexity (often k != 0)

---

When k != 0 Provides Meaningful Gains

Understanding the k(L) Formula

The k(L) formula from multi-objective optimization shows optimal k varies by scale:

Scale	Optimal k	Accuracy Gain	Step Reduction	Recommendation
Planck (1e-35 m)	0.64	50%+	50-100x	ALWAYS use NNC
Atomic (1e-10 m)	0.30	15-30%	7-22x	Use NNC - significant
Micro (1e-6 m)	0.24	10-20%	5-10x	Use NNC for large sims
Human (1 m)	0.16	<5%	1.5-3x	k=0 unless need speed
Solar (1e11 m)	0.01	<1%	~1x	k=0 optimal
Galactic (1e21 m)	-0.13	<5%	~1x	k=0 optimal

Practical Decision Rule

Use NNC (k != 0) when:

1. Problem has explicit singularities (1/r, 1/r^2, etc.) - ALWAYS
2. Length scale < 1e-6 m (microscale and smaller) - accuracy gains > 10%
3. Need to reduce computational steps - 7-100x fewer steps at small scales
4. Running large simulations on limited hardware - same accuracy, faster
5. Ultra-high precision required (>6 digits) - even for smooth problems

Use classical (k = 0) when:

1. Smooth problem at human scale (1mm - 1km) AND speed not critical
2. Engineering tolerance is adequate (3-4 digits)
3. Simplicity preferred AND not computationally constrained

Accuracy vs Complexity Trade-off

The CASCADE algorithm (61.9% win rate vs classical) proves that:

• Optimal k reduces step count by 7-100x (at microscale)
• Optimal k improves accuracy by 10-40,000x (for singularities) or 10-30% (for smooth microscale)
• These gains apply to BOTH singular and smooth problems (but magnitude differs)

---

Bundled Script: ai_simulation_helper.py

Location: skills/specialists/physics-simulation-creator/ai_simulation_helper.py

For ANY Physics Problem

# Get optimal k from length scale (works for ALL problems)
python ai_simulation_helper.py --length-scale 1e-10 --json

# Check if problem has singularity AND get optimal k
python ai_simulation_helper.py --problem "molecular dynamics" --json

# Generate optimized code
python ai_simulation_helper.py --length-scale 1e-10 --generate python --json

# Lookup k across all scales
python ai_simulation_helper.py --lookup all --json

Script Output Structure

{
  "k": 0.2963,
  "source": "length_scale",
  "length_scale": 1e-10,
  "has_singularity": false,
  "singularity_type": "none",
  "expected_accuracy_gain": "15-30% over classical",
  "expected_speedup": "1.5-3x fewer steps"
}

Or with singularity:

{
  "k": -1.0,
  "source": "singularity_type",
  "singularity_type": "1/r",
  "has_singularity": true,
  "expected_accuracy_gain": "10,000x+ over classical",
  "expected_speedup": "7-22x fewer steps"
}

---

Core Formula

k from Length Scale (Universal)

k_optimal(L) = -0.0137 * log10(L) + 0.1593

This works for ALL problems - singular or smooth.

k from Singularity Type (When Present)

Singularity	k	Use When
1/r	-1.0	Coulomb, gravitational
1/r^2	-2.0	Radiation intensity
1/sqrt(r)	-0.5	Crack tip stress
none	Use k(L) formula	Smooth problems

Decision Rule:

• If explicit singularity exists: use singularity-based k
• If smooth/unknown: use k(L) formula based on length scale
• NEVER assume k=0 without checking

---

Workflow Phases

Phase 1: Problem Analysis (Researcher Agent)

Questions to answer:

1. What is the characteristic length scale?
2. Does the problem have any singularities? (1/r, 1/r^2, etc.)
3. What are the accuracy requirements?
4. What are the performance requirements?

Output:

problem_analysis:
  length_scale: 1e-10  # meters
  has_singularity: false
  singularity_type: null
  accuracy_target: 1e-6
  performance_target: real-time

Phase 2: k-Value Selection (CLI Script)

# Always run this - it works for ALL problems
python ai_simulation_helper.py --length-scale {L} --json

If singularity detected:

python ai_simulation_helper.py --singularity "1/r" --json

Phase 3: Code Generation (Coder Agent)

Generate simulation with optimal k, whether singular or smooth.

Phase 4: Validation (Tester Agent)

Compare against classical (k=0) to verify improvement:

• Accuracy comparison
• Step count comparison
• Convergence rate comparison

---

Sub-Agents (From 206-Agent Registry)

Agent	Path	Role	When Used
coder-enhanced	foundry/core/	Generate complex numerical simulation code with TDD	Phase 3: Code generation
quantum-computing-researcher	research/emerging/quantum/	Quantum physics, algorithm design, numerical methods expertise	Phase 1: Quantum problems
model-evaluation-agent	platforms/ai-ml/evaluation/	Rigorous statistical comparison (k=optimal vs k=0), metrics	Phase 4: Accuracy validation
experiment-tracking-agent	platforms/ai-ml/experiments/	Track simulation experiments, log parameters, reproducibility	Phase 3-4: Experiment logging
evaluator	research/	Quality gate validation, GO/NO-GO decisions	Phase 4: Final validation
root-cause-analyzer	quality/analysis/	Debug failed simulations, identify numerical issues	Phase 4: Error diagnosis
sublinear-goal-planner	research/reasoning/	Complex problem decomposition, multi-step planning	Phase 1: Problem analysis

Agent Selection Rationale

Why coder-enhanced over coder?

• Better for complex numerical code
• TDD-focused approach for validation
• Handles scientific computing patterns

Why model-evaluation-agent?

• Statistical comparison expertise (paired t-test, effect size)
• Quantifies improvement: k=optimal vs k=0
• Generates evaluation reports

Why experiment-tracking-agent?

• Logs k values, length scales, singularity types
• Tracks accuracy/performance metrics across runs
• Enables reproducibility

Why root-cause-analyzer?

• When simulations fail or produce wrong results
• Identifies numerical issues (NaN, overflow, divergence)
• Maps to ERROR-DETECTION.md patterns

---

Input/Output Contracts

Input Contract

input_contract:
  required:
    - problem_description: string
  optional:
    - length_scale: float  # If known
    - singularity_type: string  # If known ("none" for smooth)
    - accuracy_target: float
    - performance_target: string
    - target_language: string  # "python" or "typescript"

Output Contract

output_contract:
  required:
    - optimal_k: float
    - k_source: string  # "length_scale" or "singularity_type"
    - has_singularity: boolean
    - simulation_code: string
  optional:
    - accuracy_comparison: object  # vs k=0
    - performance_comparison: object  # vs k=0
    - validation_report: object

---

Examples

Example 1: Smooth Quantum Problem (No Singularity)

Problem: Harmonic oscillator simulation

python ai_simulation_helper.py --length-scale 1e-10 --json

Output:

{
  "k": 0.2963,
  "has_singularity": false,
  "expected_accuracy_gain": "15-30% over classical"
}

Result: Even though there's no singularity, k=0.30 gives better accuracy than k=0.

Example 2: Problem WITH Singularity

Problem: Molecular dynamics with Lennard-Jones

python ai_simulation_helper.py --problem "molecular dynamics" --json

Output:

{
  "k": -1.0,
  "has_singularity": true,
  "singularity_type": "1/r",
  "expected_accuracy_gain": "10,000x+ over classical"
}

Result: Singularity detected, k tuned to handle it.

Example 3: Large-Scale Cosmology

Problem: Galaxy formation simulation

python ai_simulation_helper.py --length-scale 1e21 --json

Output:

{
  "k": -0.1284,
  "has_singularity": false,
  "expected_accuracy_gain": "5-10% over classical"
}

Result: At galactic scales, k goes slightly negative but is still not exactly 0.

---

Key Mindset Shift

OLD (Incomplete) Thinking:

"Use NNC only for singularities. Otherwise use classical (k=0)."

NEW (Complete) Thinking:

"NNC with optimal k provides significant gains for singularities and microscale problems. For smooth human-scale problems, k=0 remains optimal. Always CHECK rather than ASSUME."

Decision Summary:

Condition	Action
Singularity present	Use k from singularity table (k=-1 for 1/r, etc.)
L < 1e-6 m, smooth	Use k from k(L) formula (gains > 10%)
Human scale, smooth	k=0 is optimal (gains < 5%)
Need ultra-precision	Consider k(L) even for smooth problems

---

Guardrails

ALWAYS

• Run the CLI script to get optimal k (even for smooth problems)
• Check if singularities exist (but don't ONLY use skill for singularities)
• Compare results against k=0 baseline
• Document the k value and why it was chosen

NEVER

• Assume k=0 is optimal without checking
• Skip k optimization because "there's no singularity"
• Use this skill ONLY for singular problems

---

Success Metrics

Metric	Target
k-value selection	Use CLI script output
Accuracy vs k=0	Document improvement
Performance vs k=0	Document step reduction
Singularity detection	Correctly identify if present

---

References

• Meta-Calculus Portfolio: https://meta-calculus-portfolio-production.up.railway.app/
• k(L) Formula: https://meta-calculus-portfolio-production.up.railway.app/results/multiscale
• CASCADE Results: https://meta-calculus-portfolio-production.up.railway.app/cascade
• GUD Benchmarks: https://meta-calculus-portfolio-production.up.railway.app/proof/gud-benchmarks

---

Memory Namespace

namespaces:
  - physics-simulation-creator/problems/{id}: Analyzed problems
  - physics-simulation-creator/simulations/{id}: Generated simulations
  - physics-simulation-creator/comparisons/{id}: k=optimal vs k=0 results
  - improvement/audits/physics-simulation-creator: Skill audits

---

Recursive Improvement Integration (v2.0)

Role in the Loop

Physics-simulation-creator is part of the recursive self-improvement loop:

physics-simulation-creator (SPECIALIST SKILL)
    |
    +--> Creates optimized physics simulations with NNC
    +--> Can be improved BY prompt-forge
    +--> Audited BY skill-auditor

Phase 0: Expertise Loading

Before generating simulations, check for domain expertise:

expertise_check:
  domain: physics-simulation
  path: .claude/expertise/physics-simulation.yaml

  if_exists:
    - Load: Known singularity patterns
    - Load: Proven k-value mappings
    - Load: Common simulation pitfalls
    - Apply: Use expertise to guide k-selection

  if_missing:
    - Flag: Discovery mode
    - Plan: Generate expertise learnings after successful simulations
    - Capture: New problem types, k-values, improvement metrics

Input/Output Contracts

input_contract:
  required:
    - problem_description: string  # Physics problem to simulate
  optional:
    - length_scale: float  # Characteristic scale in meters
    - singularity_type: string  # "1/r", "1/r^2", "1/sqrt(r)", "none"
    - accuracy_target: float  # Desired accuracy (e.g., 1e-6)
    - performance_target: string  # "real-time", "batch", "consumer-hardware"
    - target_language: string  # "python" or "typescript"

output_contract:
  required:
    - optimal_k: float  # Selected k value
    - k_source: string  # "length_scale" or "singularity_type"
    - has_singularity: boolean  # Whether singularity detected
    - simulation_code: string  # Generated code
  optional:
    - accuracy_comparison: object  # vs k=0 baseline
    - step_reduction: object  # vs k=0 baseline
    - validation_report: object  # Verification results
    - expertise_delta: object  # New learnings for expertise update

Quality Scoring System

scoring_dimensions:
  k_selection_accuracy:
    score: 0.0-1.0
    weight: 0.30
    checks:
      - "k matches singularity type (if present)"
      - "k from CLI script (not hardcoded)"
      - "k validated against expected range [-6, 1]"

  transform_correctness:
    score: 0.0-1.0
    weight: 0.25
    checks:
      - "Forward transform implemented"
      - "Inverse transform implemented"
      - "Roundtrip error < 1e-10"
      - "k=1 special case handled"

  physics_accuracy:
    score: 0.0-1.0
    weight: 0.25
    checks:
      - "Solution bounded at singularity"
      - "Matches analytical solution (if available)"
      - "Energy conservation (for dynamics)"
      - "Improvement over k=0 documented"

  documentation_quality:
    score: 0.0-1.0
    weight: 0.20
    checks:
      - "k value and source documented"
      - "Comparison vs k=0 included"
      - "Expected improvement stated"
      - "Assumptions explicit"

  overall_score: weighted_average
  minimum_passing: 0.7

Eval Harness Integration

Physics-simulation-creator improvements are tested against:

benchmark: physics-simulation-benchmark-v1
  tests:
    - ps-001: Molecular dynamics with Lennard-Jones
    - ps-002: Crack tip stress field
    - ps-003: Vortex core velocity
    - ps-004: Radiation intensity
    - ps-005: Smooth quantum harmonic oscillator
    - ps-006: N-body computational efficiency
  minimum_scores:
    k_selection_accuracy: 0.8
    transform_correctness: 0.9
    physics_accuracy: 0.7

regression: physics-simulation-regression-v1
  tests:
    - psr-001: k sign correct for singularities (must_pass)
    - psr-002: Transform roundtrip preserves values (must_pass)
    - psr-003: NNC improves over k=0 for singularities (must_pass)
    - psr-004: CLI script produces valid k (must_pass)
  failure_threshold: 0

Uncertainty Handling

When problem type is unclear:

confidence_check:
  if confidence >= 0.8:
    - Proceed with k-selection
    - Document assumptions about singularity type
    - Generate simulation code

  if confidence 0.5-0.8:
    - Present 2-3 k-value options
    - Ask user: "Does this problem have a singularity?"
    - Ask user: "What is the characteristic length scale?"
    - Document uncertainty areas

  if confidence < 0.5:
    - DO NOT proceed with simulation
    - List what is unclear about the physics
    - Ask specific clarifying questions
    - Request physics equations or reference materials
    - NEVER guess at singularity type

Cross-Skill Coordination

Physics-simulation-creator works with:

Skill	Coordination
prompt-forge	Can improve this skill's documentation
skill-auditor	Audits this skill for improvement opportunities
functionality-audit	Validates simulation correctness
model-evaluation-agent	Compares k=optimal vs k=0 accuracy
experiment-tracking-agent	Tracks simulation experiments

Guardrails

NEVER:

• Generate k values outside the physics-valid range
• Skip validation against k=0 baseline
• Assume smooth when singularity might exist
• Create simulations without documenting k-source
• Modify frozen eval harness benchmarks

ALWAYS:

• Run CLI script for k-selection
• Include comparison vs k=0
• Document assumptions explicitly
• Support auditing with clear metrics
• Capture learnings for expertise update

---

!! SKILL COMPLETION VERIFICATION (MANDATORY) !!

After invoking this skill, verify:

• CLI Script Used: Did you run ai_simulation_helper.py?
• k Value Justified: Is the k value from CLI output (not hardcoded)?
• Comparison Documented: Did you compare vs k=0 baseline?
• Transforms Correct: Forward AND inverse transforms present?
• Physics Verified: Does solution behave correctly at singularity?

Remember: Skill() -> Task() -> TodoWrite() - ALWAYS