leanprover-community / leanprover-community/physlib

API: Standard Model gauge group

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API help-wanted
Dominant language
Lean
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Avg merge
1d 21h
Merged PRs (30d)
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Description

Standard model gauge group

Key data structure

The Standard Model gauge group is actually one of a number gauge groups corresponding to a quotient of SU(3)xSU(2)xU(1) by a finite group.
The key data structure should take as an input a specification of which quotient, and correspond to said group.

  • Is defined

Need

The standard model gauge group is the most important groups in particle physics, and having a good API around it will open the door for lots of further results in this area.

Requirements

The following are requirements of the API:

  • the instance of a group
  • the instance of a Lie group
  • the center of the group
  • the principal bundle
  • associated bundles
  • common representations, and properties thereof
  • the electroweak subgroup
  • connection to an API around the Lie algebra

Corresponding File System

https://github.com/HEPLean/PhysLean/tree/master/PhysLean/Particles/StandardModel

Contributing to this API

This API is open to contributions from anyone. If you believe that the requirements outlined above need modification, feel free to comment here. If you make a PR which is related to this API, please link it to this issue.

Parent APIs

#859 #856

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by inspecting the PhysLean/Particles/StandardModel directory and the parent APIs in issues #859 and #856. Use the requirements checklist to define the API scope, with completion shown by support for the listed group, Lie group, bundle, representation, electroweak, and Lie algebra connections.

Written by the indexing model from the issue text.

Assessment

Domain
api
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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