Instanton

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

An instanton (or pseudoparticle) is a notion appearing in theoretical and mathematical physics. An instanton is a classical solution to equations of motion with a finite, non-zero action, either in quantum mechanics or in quantum field theory.

Excerpt from the Wikipedia article “Instanton”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Tazerenix, CC BY-SA 4.0, via Wikimedia Commons.