James D. Bourassa · QDL Physics Institute
James D. Bourassa is the founder and director of the QDL Physics Institute, an independent research program developing the Quantized Dimensional Ledger (QDL): a 3L + 2F dimensional-closure framework built around a conserved Quantized Dimensional Cell (QDC). QDL treats dimensional analysis as a structural admissibility criterion that can filter models, constrain EFT operator content, and generate falsifiable scaling targets for precision experiments.
Research Profile
Closure-first foundations, prediction filtering, technical rigor, and cross-domain validation.
Overview
Bourassa’s work develops QDL as a length–frequency ledger in which every field, coupling, and constant is assigned an integer-exponent vector and must close onto a conserved dimensional cell. The program emphasizes a “closure-first” ordering:
- Definition: a canonical 3L + 2F ledger and conserved QDC.
- Reconstruction: dimensional closure as a structural constraint on admissible models.
- Method: prediction filtering for EFT operator content, constants, and measurable relations.
- Rigor: discrete RG / renormalization constraints implied by ledger admissibility.
- Applications: metrology and engineering-model auditing, plus tabletop experimental tests.
The research program spans dimensional ontology, EFT/SMEFT structure, scalar–tensor gravity and coherence, metrology-ledger tooling, and a test program across torsion balances, NV centers, cavity scaling, and metamaterials.
Contact & IDs
Affiliation: QDL Physics Institute, 11731 Woodcreek Drive, Huntley, IL 60142, USA
Email:
[email protected]
ORCID:
0009-0008-0155-0051
Primary manuscripts are published as open preprints on Zenodo. Where applicable, ledger tables and supplemental materials are provided in machine-readable form to support independent audit and reproduction.
Core Program Papers
Canonical entry points and the current framework-first reading order.
Canonical Framework Definition
Establishes the canonical QDL definition and the conserved Quantized Dimensional Cell (QDC) in a 3L + 2F basis, setting the notational and structural foundation for all downstream work.
Dimensional Closure as a Structural Constraint on Scientific Models
Reconstructs dimensional analysis as a model-admissibility criterion: closure rules restrict which transformations and terms are structurally permitted before any phenomenological fitting.
The Quantized Dimensional Ledger as a Prediction Filter for Field Content, EFT Structure, Constants, Gravity, and Precision Measurement
Develops QDL as a prediction-filter method for admissible field content, EFT operator structure, and constant combinations, with explicit links to gravity and precision metrology.
Ledger-Constrained Renormalization: Operator Pruning and Discrete RG Structure
Develops technical implications of ledger admissibility for operator pruning and discrete renormalization structure, clarifying how closure constraints propagate through EFT organization and scale-dependence.
Dimensional-Closure Auditing for Engineering Models and Measurement Pipelines
Applies QDL closure as a pre-verification method for engineering models and measurement pipelines, demonstrating how closure audits can detect structural issues before statistical validation.
Key Deep Dives
Bridge papers for gravity/phenomenology, SMEFT structure, and metrology tooling.
Coherent Ledger Fields: From SO(3,2) Dimensional Cells to a Unified Scalar–Tensor–Electromagnetic Phenomenology
Connects QDC geometry to scalar–tensor–EM phenomenology and proposes signatures in torsion-balance tests, NV-center frequency shifts, cavity-mode scaling, metamaterials, and magnetic-moment structure.
Ledger-Closure Constraints on the SMEFT: A Lattice-Theoretic Derivation of Operator Exclusions and Wilson-Coefficient Relations
Applies ledger closure to SMEFT structure to derive operator exclusions and structured relations among Wilson coefficients.
The Quantized Dimensional Ledger for Metrology: Dimensional Closure, QMU Ledgers, and the Ontology of Physical Constants
Develops metrology tooling via the Quantum Measurement Unit (QMU) ledger, with ledger tables spanning mechanics, electromagnetism, gravity, and thermodynamics, and an ontology for constants under closure.
For Journal Editors & Collaborators
Notes on scope, reproducibility, and how to engage with the QDL research program.
Scope & Reproducibility
QDL is presented as a dimensional-closure and admissibility framework, with prediction filtering and applications layered on top. The emphasis is on:
- Algebraic closure across mechanical, electromagnetic, gravitational, and EFT quantities.
- Ledger-style documentation of exponents and units for transparent audit.
- Explicit separation of dimensional structure from specific dynamical choices.
- Public availability of tables, protocols, and supplemental derivations where applicable.
The Institute aims to make the program easy to evaluate: definitions are stated cleanly, closure rules are explicit, and proposed experiments include clear falsification targets.
Collaboration Interests
Collaboration is particularly welcome with:
- Metrology institutes and standards laboratories interested in closure-based audits.
- Precision tests of scaling laws, constants, and dimensional reconstruction.
- Torsion-balance, NV-center, cavity, and metamaterial experimental teams.
- Theorists exploring EFT / SMEFT structure, scalar–tensor gravity, or dimensional ontology.
Prospective collaborators and journal editors may contact [email protected] for additional derivations, extended tables, or a targeted closure audit for a specific model or dataset.