Difference between revisions of "One-loop provider"
From Particle Wiki
(Created page with "A '''one-loop provider''' (or '''one-loop program''') is a specialised software for generating one-loop amplitudes for perturbative quantum field theo...") |
|||
| (4 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| + | [[Category:Theory software]] | ||
| + | [[Category:Matrix element generator]] | ||
A '''one-loop provider''' (or '''one-loop program''') is a specialised software for generating one-[[Loop|loop]] [[Amplitude|amplitudes]] for [[perturbative quantum field theory]] calculations. They are a special case of [[external amplitude providers]]. One-loop amplitudes contribute to [[next-to-leading order]] (and higher order) [[Cross section|cross sections]] as well as the [[Leading order|leading-order]] cross sections of [[loop-induced]] processes. Most one-loop providers can also compute other amplitudes, but their strength lies in loop amplitudes, which are typically much harder to compute than [[Tree level|tree-level]] amplitudes. | A '''one-loop provider''' (or '''one-loop program''') is a specialised software for generating one-[[Loop|loop]] [[Amplitude|amplitudes]] for [[perturbative quantum field theory]] calculations. They are a special case of [[external amplitude providers]]. One-loop amplitudes contribute to [[next-to-leading order]] (and higher order) [[Cross section|cross sections]] as well as the [[Leading order|leading-order]] cross sections of [[loop-induced]] processes. Most one-loop providers can also compute other amplitudes, but their strength lies in loop amplitudes, which are typically much harder to compute than [[Tree level|tree-level]] amplitudes. | ||
One-loop providers are often used as external software to provide one-loop amplitudes for [[Event generator|event generators]]. | One-loop providers are often used as external software to provide one-loop amplitudes for [[Event generator|event generators]]. | ||
| − | |||
== List of one-loop providers == | == List of one-loop providers == | ||
| Line 8: | Line 9: | ||
* [[GoSam]] | * [[GoSam]] | ||
* [[MadGraph5_aMC@NLO]] | * [[MadGraph5_aMC@NLO]] | ||
| + | * [[VBFNLO]] | ||
== Use from other software == | == Use from other software == | ||
The following event generators use or support the use of external one-loop providers: | The following event generators use or support the use of external one-loop providers: | ||
| − | * [[Herwig | + | * [[Herwig]] 7<ref>The Herwig Collaboration: [http://herwig.hepforge.org/tutorials/installation/prerequisite.html#external-amplitude-providers Herwig 7 installation notes]</ref> |
* [[Sherpa]]<ref>Sherpa contributors: [http://sherpa.hepforge.org/doc/SHERPA-MC-2.2.0.html#External-one_002dloop-ME Sherpa 2.2.0 online manual]</ref> | * [[Sherpa]]<ref>Sherpa contributors: [http://sherpa.hepforge.org/doc/SHERPA-MC-2.2.0.html#External-one_002dloop-ME Sherpa 2.2.0 online manual]</ref> | ||
== References == | == References == | ||
<references /> | <references /> | ||
| + | |||
| + | == See also == | ||
| + | * [[Two-loop provider]] | ||
Latest revision as of 16:11, 1 August 2017
A one-loop provider (or one-loop program) is a specialised software for generating one-loop amplitudes for perturbative quantum field theory calculations. They are a special case of external amplitude providers. One-loop amplitudes contribute to next-to-leading order (and higher order) cross sections as well as the leading-order cross sections of loop-induced processes. Most one-loop providers can also compute other amplitudes, but their strength lies in loop amplitudes, which are typically much harder to compute than tree-level amplitudes.
One-loop providers are often used as external software to provide one-loop amplitudes for event generators.
List of one-loop providers
Use from other software
The following event generators use or support the use of external one-loop providers:
References
- ↑ The Herwig Collaboration: Herwig 7 installation notes
- ↑ Sherpa contributors: Sherpa 2.2.0 online manual
