Feynman diagram calculator

CALHEP - this package takes you from a given Lagrangian through its Feynmann rules to the calculation of cross sections. xloops - this package calculates the 1-PI Feynman diagrams with …

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Calculus of Feynman diagrams - Physics Stack Exchange	Oct 30, 2022
How to calculate the process correctly using Feynman diagrams?	Jan 8, 2021
Calculating the symmetry factor of the sunset Feynman diagram	Jan 10, 2020
How to count and 'see' the symmetry factor of Feynman diagrams?

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FeynCalc
https://feyncalc.github.io › reference
Online Reference · FeynCalc - GitHub Pages
FeynCalc is a Mathematica package for algebraic calculations in Quantum Field Theory and semi-automatic evaluation of Feynman Diagrams. Useful information. Installation; Loading the …
FeynArts
https://feynarts.de › formcalc
The FormCalc Visitor Center - FeynArts
FormCalc is a Mathematica package for the calculation of tree-level and one-loop Feynman diagrams. It reads diagrams generated with and returns the results in a way well suited for further numerical and analytical evaluation.
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How do I generate a Feynman diagram?
A set of programs is presented for automatically generating and calculating Feynman diagrams. Diagrams are generated with FeynArts, then algebraically simplified using a combination of Mathematica and FORM implemented in the package FormCalc, and finally evaluated numerically using the LoopTools package.
Generating and Calculating One-loop Feynman Diagrams with FeynArts
library.wolfram.com
How many terms does a Feynman diagram have?
In a non-relativistic theory, there are no antiparticles and there is no doubling, so each Feynman diagram includes only one term. Feynman gave a prescription for calculating the amplitude (the Feynman rules, below) for any given diagram from a field theory Lagrangian.
Feynman diagram - Wikipedia
en.wikipedia.org
How are Feynman diagrams obtained from a Lagrangian?
In quantum field theories, Feynman diagrams are obtained from a Lagrangian by Feynman rules. Dimensional regularization is a method for regularizing integrals in the evaluation of Feynman diagrams; it assigns values to them that are meromorphic functions of an auxiliary complex parameter d, called the dimension.
Feynman diagram - Wikipedia
en.wikipedia.org
What is the electromagnetic contraction in the Feynman gauge?
is the electromagnetic contraction (propagator) in the Feynman gauge. This term is represented by the Feynman diagram at the right. This diagram gives contributions to the following processes: e − e + scattering (initial state at the bottom/top, final state at the top/bottom of the diagram).
Feynman diagram - Wikipedia
en.wikipedia.org
Why are Feynman diagrams used in particle physics?
The scheme is named after American physicist Richard Feynman, who introduced the diagrams in 1948. The calculation of probability amplitudes in theoretical particle physics requires the use of large, complicated integrals over a large number of variables. Feynman diagrams instead represent these integrals graphically.
Feynman diagram - Wikipedia
en.wikipedia.org
How are electrons represented in a Feynman diagram?
They are represented in Feynman diagrams as follows: Electron in the initial state is represented by a solid line, with an arrow indicating the spin of the particle e.g. pointing toward the vertex (→•). Electron in the final state is represented by a line, with an arrow indicating the spin of the particle e.g. pointing away from the vertex: (•→).
Feynman diagram - Wikipedia
en.wikipedia.org
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FeynCalc
https://feyncalc.github.io › examples
Example gallery · FeynCalc - GitHub Pages
Here we collect examples of interesting calculations from textbooks and papers that can be reproduced using . The HTML pages below were generated from example notebooks shipped …

Physics Forums

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What are some recommended Feynman diagram calculators?

Jan 30, 2009 · In summary, there are several Feynman diagram calculators available, such as CalcHEP, MadGraph, LanHEP, FeynArts/FormCalc, WHIZARD, and FeynRules. Each has its …

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How to calculate self energy Feynman diagram like that - Physics Forums	Oct 7, 2016

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Github
https://github.com › kunyuan › FeynCalculator
A simple calculator for Feynman diagrams - GitHub
This small code can calculate Feynman diagrams for a generic quantum many-body system.
feyn-calc.appspot.com
http://feyn-calc.appspot.com
Feynman Diagram Calculator
No diagrams to display. ... Feynman Diagram Calculator
feyndiagram.com
http://feyndiagram.com
FeynDiagram - Draw Feynman Diagrams
Feynman diagrams are the standard method for communicating complicated high-energy physics calculations. FeynDiagram is a library of C++ routines that allows you to draw high-quality …
Wikipedia
https://en.wikipedia.org › wiki › Feynman_diagram
Feynman diagram - Wikipedia
In theoretical physics, a Feynman diagram is a pictorial representation of the mathematical expressions describing the behavior and interaction of subatomic particles. The scheme is …
Wolfram Library Archive
https://library.wolfram.com › infocenter › MathSource
Calculating Feynman diagrams in 4 and D dimensions - Wolfram
FormCalc calculates and simplifies one-loop Feynman diagrams. It reads amplitudes generated with FeynArts (item 1158) and returns the results in a way well suited for further numerical (or …
Richard Feynman
https://feynman.com › science › feynman-diagrams-decoded
Feynman Diagrams Decoded – Richard Feynman
These diagrams are roadmaps for calculating how things happen in nature – and they don’t happen in just one way: for example, two electrons going from one place to another in …
cern.ch
https://gsalam.web.cern.ch › gsalam › feynfig
FeynFig - CERN
FeynFig is a program to generate feynman diagrams in xfig format, which can also be translated to SVG format with the fig2dev program. It can be used in two ways: one can write an input file …
arXiv.org
https://arxiv.org › pdf
[PDF]
Feynman Diagram Calculations with FeynArts, FormCalc, …
Arts [1], FormCalc, and LoopTools [2] are programs for the generation and calculation of Feynman diagrams. The ‘canonical’ problem they solve is the comput.
Github
https://github.com › kunyuan › FeynCalc
A general purpose calculator for Feynman diagrams - GitHub
A general purpose calculator for Feynman diagrams. The folder "diagram" contains a python codebase to generate Feynman/Hugenholtz diagrams. The following is a list of important files: …
Wolfram Library Archive
https://library.wolfram.com › infocenter › Articles
Generating and Calculating One-loop Feynman Diagrams with
Diagrams are generated with FeynArts, then algebraically simplified using a combination of Mathematica and FORM implemented in the package FormCalc, and finally evaluated …
FeynCalc
https://feyncalc.github.io › FeynCalcBookDev › Extra › FeynCalc.html
FeynCalc manual (development version) - GitHub Pages
FeynCalc is a Mathematica package for algebraic calculations in Quantum Field Theory and semi-automatic evaluation of Feynman Diagrams. FCLoopGetKinematicInvariants - kinematic …
Wolfram Library Archive
https://library.wolfram.com › infocenter › Articles
Automatic loop calculations with FeynArts, FormCalc, and …
This article describes three Mathematica packages for the automatic calculation of one-loop Feynman diagrams: the diagrams are generated with FeynArts, algebraically simplified with …
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Generating and Calculating One-loop Feynman Diagrams with FeynArts

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