---
id: OP-EM-004-EN
path: /en/open-problems/electromagnetism/high-gamma-discriminator
title: High-γ Discriminator
title_en: High-γ Discriminator
category: Electromagnetism
summary: Compute an ASD observable difference for one apparatus that cannot be absorbed into coordinate, calibration
  or source-parameter redefinitions.
template: problem
version: 1.0.0
updated: '2026-09-15'
canonical: false
source_tier: research-notes
theory_status: OPEN
evidence_status: UNTESTED
locale: en
module_key: electromagnetism-research
module_navigation:
- path: /en/theory/electromagnetism
  label: Overview
  en: Overview
- path: /en/theory/electromagnetism/coulomb-interaction
  label: Coulomb
  en: Coulomb
- path: /en/theory/electromagnetism/magnetic-force
  label: Magnetic force
  en: Magnetic force
- path: /en/theory/electromagnetism/moving-charge-field
  label: Moving charge
  en: Moving charge
- path: /en/theory/electromagnetism/vector-potential
  label: Vector potential
  en: Vector potential
- path: /en/theory/electromagnetism/magnetic-field
  label: Magnetic field
  en: Magnetic field
- path: /en/theory/electromagnetism/electromagnetic-waves
  label: EM waves
  en: EM waves
- path: /en/tests/electromagnetism
  label: Tests
  en: Tests
canonical_scope: Research task; no new canonical result
source_chapter: Chapter 3 · Electromagnetism in ASD
source_reference: Chapter 3 / 第三章 · §I.3–4, §VIII.3; PDF pp. 3–4, 18–19
source_version: EM-f06476f55cae
source_sha256: f06476f55cae728d712f553b338c513eb182e144c2c5cc4cd5ae5ed87ed1d1c6
source_kind: manifest
source_records:
- id: CH3-d9ead146f6ac
  title: 第三章(1).pdf
  sha256: d9ead146f6ac3335b8663b23cea963319306f549ea4fcd5e3ee34fb7f7ab9413
  pages: 20
source_manifest: electromagnetism-source-manifest.json
source_manifest_url: /downloads/ASD_Electromagnetism_Source_Manifest.json
last_reviewed: '2026-09-15'
depends_on:
- /en/tests/electromagnetism
- /en/theory/electromagnetism/moving-charge-field
related:
- /en/theory/electromagnetism
- /en/theory/electromagnetism/coulomb-interaction
- /en/theory/electromagnetism/magnetic-force
- /en/theory/electromagnetism/moving-charge-field
- /en/theory/electromagnetism/vector-potential
- /en/theory/electromagnetism/magnetic-field
- /en/theory/electromagnetism/electromagnetic-waves
- /en/tests/electromagnetism
open_problems:
- /en/open-problems/electromagnetism/moving-charge-field
- /en/open-problems/electromagnetism/field-representation
- /en/open-problems/electromagnetism/maxwell-effective-limit
- /en/open-problems/electromagnetism/longitudinal-transverse-coupling
equations:
- em-virtual-work
- em-standard-transverse
- em-low-speed
sources:
- label: CH3-d9ead146f6ac · 第三章(1).pdf
  kind: supplied-manuscript
outline:
- Research Target
- Established Baseline
- Required Work
- Deliverables and Acceptance
- Review Boundaries and Source
seo_title: High-γ Discriminator | Anisotropic Space Dynamics
canonical_url: https://asd-physics.org/en/open-problems/electromagnetism/high-gamma-discriminator
translation_path: /open-problems/electromagnetism/high-gamma-discriminator
mathematical_review: OPEN REVIEW
review_path: /en/open-problems/electromagnetism/high-gamma-discriminator#review-notes
review_note: Derivations use the constitutive inputs and domain stated on this page; a formal source designation
  is distinct from experimental validation.
evidence_note: Evidence is assigned per observable in the EM test matrix; no new experimental fit is claimed.
translation_of: /open-problems/electromagnetism/high-gamma-discriminator
translation_version: 1.0.0
problem:
  expertise:
  - Field dynamics, measurement and mathematical modeling
  difficulty: Open research
  missing_result: Choose a finite bunch, trajectory or electro-optic apparatus with common source parameters and
    calibration. Map fields or true interactions into its signal; separate physical differences, parameter degeneracy
    and systematic errors.
  deliverable: Two predictions for the same measurand; raw data and response function; parameter sensitivity, residuals
    and noise budget; an explicit discrimination or degeneracy conclusion.
  current_state: The special-case true force and standard laboratory total force scale differently, while the coordinate
    generalized force matches numerically. Published fast electro-optic sampling offers a case study; this site
    has no ASD fit.
---
## Research Target

**OP-EM-004 · OPEN**

Compute an ASD observable difference for one apparatus that cannot be absorbed into coordinate, calibration or source-parameter redefinitions.

## Established Baseline

The special-case true force and standard laboratory total force scale differently, while the coordinate generalized force matches numerically. Published fast electro-optic sampling offers a case study; this site has no ASD fit.

## Required Work

Choose a finite bunch, trajectory or electro-optic apparatus with common source parameters and calibration. Map fields or true interactions into its signal; separate physical differences, parameter degeneracy and systematic errors.

## Deliverables and Acceptance

Two predictions for the same measurand; raw data and response function; parameter sensitivity, residuals and noise budget; an explicit discrimination or degeneracy conclusion.

## Review Boundaries and Source

<div id="review-notes" />

Do not treat ratios of differently defined forces, an approximately factor-two amplitude discrepancy or a geometrical 1/γ angular scale as ASD validation.

<CanonicalSource />