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Record W4287373071 · doi:10.48550/arxiv.2101.10118

Lagrangian and Hamiltonian Formulation of Classical Electrodynamics\n without Potentials

2021· preprint· W4287373071 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenuearXiv (Cornell University) · 2021
Typepreprint
Language
FieldPhysics and Astronomy
TopicQuantum and Classical Electrodynamics
Canadian institutionsUniversity of British Columbia, Okanagan Campus
Fundersnot available
KeywordsHamiltonian (control theory)Nabla symbolMathematical physicsPhase spaceLagrangianPhysicsPoisson bracketLagrange multiplierGaussConstraint algorithmMaxwell's equationsClassical mechanicsMathematicsQuantum mechanicsOmega

Abstract

fetched live from OpenAlex

In the standard Lagrangian and Hamiltonian approach to Maxwell's theory the\npotentials $A^{\\mu}$ are taken as the dynamical variables. In this paper I take\nthe electric field $\\vec{E}$ and the magnetic field $\\vec{B}$ as the the\ndynamical variables. I find a Lagrangian that gives the dynamical Maxwell\nequations and include the constraint equations by using Lagrange multipliers.\nIn passing to the Hamiltonian one finds that the canonical momenta\n$\\vec{\\Pi}_E$ and $\\vec{\\Pi}_B$ are constrained giving 6 second class\nconstraints at each point in space. Gauss's law and\n$\\vec{\\nabla}\\cdot\\vec{B}=0$ can than be added in as additional constraints.\nThere are now 8 second class constraints, leaving 4 phase space degrees of\nfreedom. The Dirac bracket is then introduced and is calculated for the field\nvariables and their conjugate momenta.\n

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.891
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.020
GPT teacher head0.182
Teacher spread0.161 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it