Published August 30, 2026 | Version v1

Fixed, Driven, and Autonomous Coherent Generators in Quantum Wasserstein Geometry Trajectory compatibility, driven lifting, and model-level invariance in open quantum dynamics

Description

FoundationsOTQG &GKSL  (Optimal transport Quantum Gravity and GKSL) Architecture (and stress-test (last update) - stress-test v1 )

Pedagogical Guide, Foundations Audit, Uniqueness & Substitutability Analysis, Literature Comparison, and Reading Guidance :A Pedagogical Guide to Understanding the OT–GKSL Architecture

---------------------------------------------------------------------------------------------------------------------

See also:  Covariant Coherent-Generator Geometry over Quantum Wasserstein State Space

This work develops a covariant framework for distinguishing three different situations in finite-dimensional open quantum dynamics: a fixed global coherent generator, an externally driven time-dependent generator, and an intrinsically transported effective coherent degree of freedom.

The starting point is the observation that a fixed Hamiltonian generator and the coherent direction that is instantaneously visible at a density matrix are not the same mathematical object. For a self-adjoint generator K,

E_ρ([K]) = −i[K, ρ],

and the components commuting with ρ are instantaneously invisible. The effective coherent direction therefore belongs to the state-dependent quotient

𝒢_ρ = 𝔲/𝔥_ρ T_ρ𝒪_ρ,

where 𝔲 is the global space of inner self-adjoint derivations modulo the center and 𝔥_ρ is the stabilizer of ρ.

On regular constant-orbit-type strata, the Carlen–Maas quantum-Wasserstein metric associated with a fixed detailed-balance GKSL sector induces a metric and a projected connection on the effective-generator bundle. Importantly, a varying quotient representative κ(ρ) does not by itself imply a physically varying Hamiltonian.

To make this distinction quantitative, we introduce the path operator

(T_I [K])(ξ) = ϖ_{ρ(ξ)}([K])

and the fixed-generator recovery defect

ε_fix = dist(κ, Ran T_I).

The vanishing of ε_fix is equivalent to compatibility with a single global fixed generator along the trajectory. This zero/nonzero criterion is metric-independent, while its numerical value, conditioning, covariant derivative, curvature, and holonomy depend on the chosen generator metric, here supplied by the detailed-balance Carlen–Maas geometry.

We further distinguish trajectory-level recovery from model-level recovery. Smooth effective-generator histories admit pathwise lifts to time-dependent generators K(ξ); therefore failure of fixed-generator recovery does not by itself imply new autonomous physics. A genuinely augmented regime requires an independent evolution law for the effective generator. Graph-invariance criteria are given for both fixed and externally driven sectors.

Explicit qubit calculations illustrate the framework. A constant global Hamiltonian can induce a non-parallel effective-generator field, while a nonconstant effective amplitude provides a simple example with ε_fix > 0. The corresponding entropy balance is also derived without modifying the exact Carlen–Maas detailed-balance gradient-flow result.

The contribution is therefore structural and classificatory: it provides a mathematically controlled separation between fixed, driven, and autonomous coherent-generator descriptions, together with recovery, conditioning, coarse-graining, and geometric diagnostics. No derivation of gauge theory, gravity, or spacetime curvature from the generator geometry is claimed.

 

        8.  OT-GKSL: Technical papers, companion papers, and supplementary materials:

Files

OT_GKSL_Fixed_Driven_Autonomous_Final_v3_0.pdf

Files (421.6 kB)

Name Size Download all
md5:b067347a998119732b35473f9c8acad9
421.6 kB Preview Download