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Published March 8, 2026 | Version 1
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Inertial Ricci Flow on Discrete Compact Manifolds via Adaptive Hash Grids Convergence, Lattice Curvature Scaling, and Geometric Momentum.

Description

 

Abstract

We address the problem of numerically solving the Ricci flow equation
∂g₍μν₎/∂t = −2R₍μν₎
on ten-dimensional compact discrete manifolds, where naive grid discretization becomes computationally intractable due to the curse of dimensionality.

The central contribution is a physical analogy: we treat the metric tensor g₍μν₎ as a dynamical field carrying inertia, in direct correspondence with the momentum density of the electromagnetic field in classical field theory. This observation leads to a Heavy Ball integrator for the Ricci flow PDE, here termed inertial geometric flow, which introduces a velocity field v₍μν₎ evolved according to

vⁿ⁺¹₍μν₎ = βvⁿ₍μν₎ − Δt·Rⁿ₍μν₎

with momentum coefficient β = 0.90.

This integrator is combined with an adaptive hash-grid architecture that instantiates only geometrically active nodes, thermodynamic pruning, periodic boundary conditions encoding compact topology, and native multi-threading.

We report convergence of a massively deformed initial metric (R₍μν₎ᵐᵃˣ = 44) to a Ricci-flat configuration on discrete tori Tᴸ⁴ for L ∈ {8,16}, achieving R₍μν₎ᵐᵃˣ < 10⁻⁶ in 520 steps (L = 8, 4,096 nodes) and 1,253 steps (L = 16, 65,536 nodes).

The isotropy of the converged metric reaches 8.44×10⁻¹⁵, at the level of double-precision machine epsilon, and the residual momentum velocity satisfies

‖v₍μν₎‖ₘₐₓ < 3×10⁻⁸

A uniform residual lattice curvature κ(L) is identified, arising from the intrinsic curvature of the periodic hypercubic lattice, and shown to scale as

κ(L) ∝ L⁻²

with constant C ≈ 1.14×10⁻², confirming O(Δx²) convergence toward the continuous flat torus.

The characteristic overshoots produced by the momentum integrator in the high-curvature regime are interpreted as the geometric analogue of ringing in an underdamped electromagnetic circuit.

Other

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Use of this work for noncommercial purposes, including academic research, independent study, education, benchmarking, validation, reproducibility studies, and experimental evaluation, is permitted under the terms of the PolyForm Noncommercial License 1.0.0, provided proper attribution is given.

2. Statement of Prior Art

This document constitutes a formal public disclosure establishing prior art for the numerical framework introduced in this work for solving the Ricci flow equation on high-dimensional compact discrete manifolds, including the algorithmic and architectural techniques described herein, including but not limited to:

• Inertial geometric flow formulation using a Heavy Ball momentum integrator for the Ricci flow PDE
• Introduction of a metric velocity field v₍μν₎ evolving alongside the metric tensor g₍μν₎
• Interpretation of geometric flow dynamics through physical analogy with electromagnetic momentum density
• Adaptive hash-grid architecture instantiating only geometrically active lattice nodes
• Thermodynamic pruning of inactive regions of the discretized manifold
• Periodic boundary conditions encoding compact topologies such as discrete tori Tᴸⁿ
• Native multi-threaded evaluation of curvature and metric updates
• Identification and characterization of residual lattice curvature scaling κ(L) ∝ L⁻²

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