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- Infrared_divergence abstract "In physics, an infrared divergence or infrared catastrophe is a situation in which an integral, for example a Feynman diagram, diverges because of contributions of objects with very small energy approaching zero, or, equivalently, because of physical phenomena at very long distances.The infrared (IR) divergence only appears in theories with massless particles (such as photons). They represent a legitimate effect that a complete theory often implies. One way to deal with it is to impose an infrared cutoff and take the limit as the cutoff approaches zero and/or refine the question. Another way is to assign the massless particle a fictitious mass, and then take the limit as the fictitious mass vanishes.The divergence is usually in terms of particle number and not empirically troubling, in that all measurable quantities remain finite. (Unlike in the case of the UV catastrophe where the energies involved diverge.)".
- Infrared_divergence wikiPageID "701481".
- Infrared_divergence wikiPageLength "2464".
- Infrared_divergence wikiPageOutDegree "21".
- Infrared_divergence wikiPageRevisionID "623615565".
- Infrared_divergence wikiPageWikiLink Bremsstrahlung.
- Infrared_divergence wikiPageWikiLink Category:Quantum_field_theory.
- Infrared_divergence wikiPageWikiLink Category:Renormalization_group.
- Infrared_divergence wikiPageWikiLink Cutoff_(physics).
- Infrared_divergence wikiPageWikiLink Electric_charge.
- Infrared_divergence wikiPageWikiLink Energy.
- Infrared_divergence wikiPageWikiLink Feynman_diagram.
- Infrared_divergence wikiPageWikiLink Integral.
- Infrared_divergence wikiPageWikiLink Massless_particle.
- Infrared_divergence wikiPageWikiLink Maxwells_equations.
- Infrared_divergence wikiPageWikiLink Photon.
- Infrared_divergence wikiPageWikiLink Physics.
- Infrared_divergence wikiPageWikiLink Probability_amplitude.
- Infrared_divergence wikiPageWikiLink Quantum_electrodynamics.
- Infrared_divergence wikiPageWikiLink Renormalization.
- Infrared_divergence wikiPageWikiLink Renormalization_group.
- Infrared_divergence wikiPageWikiLink Soft_photon.
- Infrared_divergence wikiPageWikiLink Ultraviolet_catastrophe.
- Infrared_divergence wikiPageWikiLink Ultraviolet_divergence.
- Infrared_divergence wikiPageWikiLinkText "Infrared divergence".
- Infrared_divergence wikiPageWikiLinkText "infrared divergence".
- Infrared_divergence wikiPageWikiLinkText "infrared-divergent".
- Infrared_divergence wikiPageUsesTemplate Template:Quantum-stub.
- Infrared_divergence wikiPageUsesTemplate Template:Reflist.
- Infrared_divergence subject Category:Quantum_field_theory.
- Infrared_divergence subject Category:Renormalization_group.
- Infrared_divergence hypernym Situation.
- Infrared_divergence type ProgrammingLanguage.
- Infrared_divergence type Mechanic.
- Infrared_divergence type Physic.
- Infrared_divergence type Redirect.
- Infrared_divergence comment "In physics, an infrared divergence or infrared catastrophe is a situation in which an integral, for example a Feynman diagram, diverges because of contributions of objects with very small energy approaching zero, or, equivalently, because of physical phenomena at very long distances.The infrared (IR) divergence only appears in theories with massless particles (such as photons). They represent a legitimate effect that a complete theory often implies.".
- Infrared_divergence label "Infrared divergence".
- Infrared_divergence sameAs Q3032223.
- Infrared_divergence sameAs Divergència_infraroja.
- Infrared_divergence sameAs Divergence_infrarouge.
- Infrared_divergence sameAs m.033zsg.
- Infrared_divergence sameAs Инфракрасная_расходимость.
- Infrared_divergence sameAs Q3032223.
- Infrared_divergence wasDerivedFrom Infrared_divergence?oldid=623615565.
- Infrared_divergence isPrimaryTopicOf Infrared_divergence.