Here is a minimal, self-contained implementation of dual-root scalar fields (α₊ ≈ φ-dominant, α₋ ≈ ψ-dominant/contractive) as described in Task Completion Document #5.

This is a toy numerical + symbolic demonstration using Python + SymPy + NumPy/Matplotlib. It visualizes:

python

import numpy as np

import matplotlib.pyplot as plt

from sympy import symbols, sqrt, simplify, lambdify, N


# ───────────────────────────────────────────────

# 1. Define golden ratio roots (exact symbolic)

# ───────────────────────────────────────────────


phi = (1 + sqrt(5)) / 2      # ≈ 1.6180339887

psi = (1 - sqrt(5)) / 2      # ≈ -0.6180339887


print(f"φ  = {N(phi, 12)}")

print(f"ψ  = {N(psi, 12)}")

print(f"φ × ψ = {N(phi * psi, 6)}")         # should be -1

print(f"φ + ψ = {N(phi + psi, 6)}")         # should be 1

print(f"φ² ≈ {N(phi**2, 10)}")              # ≈ 2.618


# ───────────────────────────────────────────────

# 2. Dual-root effective potential (symbolic → numerical)

# ───────────────────────────────────────────────


alpha_plus, alpha_minus = symbols('alpha_+ alpha_-')


# Simple symmetric + mixing potential

V = (

    4.0 * (alpha_plus - phi)**2 +              # strong attraction to φ

    1.0 * (alpha_minus - psi)**2 +             # weaker attraction to ψ

    2.5 * (alpha_plus * alpha_minus - phi*psi) # mass-like mixing (φψ = -1)

)


# Lambdify for fast numerical evaluation

V_num = lambdify((alpha_plus, alpha_minus), V, modules='numpy')


# ───────────────────────────────────────────────

# 3. Toy gradient descent / relaxation dynamics

#    (mimicking approach to IR fixed point)

# ───────────────────────────────────────────────


def gradient_flow(n_steps=800, lr=0.008, noise_level=0.00):

    """

    Simple Euler integration: α ← α - lr ∇V + small noise

    """

    np.random.seed(42)

    

    a_plus  = np.full(n_steps+1, 3.0)      # start far from φ

    a_minus = np.full(n_steps+1, -2.0)     # start far from ψ

    

    history_plus  = [a_plus[0]]

    history_minus = [a_minus[0]]

    

    for i in range(n_steps):

        # numerical gradients (central difference)

        eps = 1e-5

        V_pp = V_num(a_plus[i] + eps, a_minus[i])

        V_pm = V_num(a_plus[i] - eps, a_minus[i])

        dV_da_plus = (V_pp - V_pm) / (2*eps)

        

        V_mp = V_num(a_plus[i], a_minus[i] + eps)

        V_mm = V_num(a_plus[i], a_minus[i] - eps)

        dV_da_minus = (V_mp - V_mm) / (2*eps)

        

        # update

        a_plus[i+1]  = a_plus[i]  - lr * dV_da_plus

        a_minus[i+1] = a_minus[i] - lr * dV_da_minus

        

        # optional small noise (phase-7 jitter analog)

        a_plus[i+1]  += noise_level * np.random.randn()

        a_minus[i+1] += noise_level * np.random.randn()

        

        history_plus.append(a_plus[i+1])

        history_minus.append(a_minus[i+1])

    

    return np.array(history_plus), np.array(history_minus)



# Run simulation

steps = 1200

a₊, a₋ = gradient_flow(n_steps=steps, lr=0.012, noise_level=0.003)


# ───────────────────────────────────────────────

# 4. Plot results

# ───────────────────────────────────────────────


fig, (ax1, ax2) = plt.subplots(2, 1, figsize=(11, 7), sharex=True)


t = np.arange(len(a₊))


ax1.plot(t, a₊, label=r'$\alpha_+$  (expansive)', color='darkorange', lw=2.4)

ax1.axhline(y=float(phi), color='orange', ls='--', alpha=0.7, label=f'φ ≈ {N(phi,6)}')

ax1.set_ylabel(r'$\alpha_+$')

ax1.legend(loc='upper right')

ax1.grid(True, alpha=0.3)


ax2.plot(t, a₋, label=r'$\alpha_-$  (contractive)', color='teal', lw=2.4)

ax2.axhline(y=float(psi), color='cyan', ls='--', alpha=0.7, label=f'ψ ≈ {N(psi,6)}')

ax2.set_xlabel('RG-time / iteration step')

ax2.set_ylabel(r'$\alpha_-$')

ax2.legend(loc='lower right')

ax2.grid(True, alpha=0.3)


plt.suptitle("Dual-root scalar relaxation toward (φ, ψ) fixed point\n(with small phase-7-like jitter)", fontsize=13)

plt.tight_layout(rect=[0, 0, 1, 0.96])

plt.show()



# Bonus: evaluate potential at end point

final_V = V_num(a₊[-1], a₋[-1])

print(f"\nFinal position:  α₊ = {a₊[-1]:.8f}    α₋ = {a₋[-1]:.8f}")

print(f"Potential at end: V = {final_V:.10f}  (should be near minimum)")

What this minimal demo shows

How to extend toward the full model

You can copy-paste the code above directly into a Jupyter notebook or Python script (requires numpy, matplotlib, sympy — all very standard).

Let me know which direction you'd like to take next: more realistic RG flow, 2D spatial visualization, coupling to a mock metric, or something else.