wigner-symbols: CG coefficients and Wigner symbols.
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- wigner-symbols-1.0.0.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
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| Versions [RSS] | 1.0.0 |
|---|---|
| Change log | changelog.md |
| Dependencies | base (>=4 && <5) [details] |
| License | MIT |
| Copyright | (c) 2015 Phil Ruffwind |
| Author | Phil Ruffwind |
| Maintainer | rf@rufflewind.com |
| Category | Math |
| Home page | https://github.com/Rufflewind/wigner-symbols |
| Bug tracker | https://github.com/Rufflewind/wigner-symbols/issues |
| Source repo | head: git clone https://github.com/Rufflewind/wigner-symbols |
| Uploaded | by Rufflewind at 2015-10-02T07:21:08Z |
| Distributions | NixOS:1.0.0 |
| Reverse Dependencies | 1 direct, 0 indirect [details] |
| Downloads | 958 total (8 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
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| Status | Docs available [build log] Last success reported on 2015-10-04 [all 1 reports] |
Readme for wigner-symbols-1.0.0
[back to package description]wigner-symbols 
Quick links: changelog, documentation.
This library calculates:
- Clebsch-Gordan coefficients
- Wigner 3-j symbols
- Wigner 6-j symbols
- Wigner 9-j symbols
These sets of numbers are commonly used in physics to couple, uncouple, and recouple eigenstates of angular momentum and similar operators. Mathematically, they describe the relationship between the bases of irreducible representations of SU(2) or SO(3) and those of their tensor products.
The library uses the Condon-Shortley phase convention as typical in physics.
Each function has a …Sq variant that returns the exact value as a
SignedSqrtRational, which represents a mathematical expression of the form:
s √(n / d)
where
sis a sign (either+,-, or0),nis a nonnegative numerator, anddis a positive denominator.
Installation
The package is available on Hackage:
cabal install wigner-symbols