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Regularization (Physics)
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In physics, especially quantum field theory, regularization is a method of dealing with infinite, divergent, and non-sensical expressions by introducing an auxiliary concept of a regulator (for example, the minimal distance in space which is useful if the divergences arise from short-distance physical effects). The correct physical result is obtained in the limit in which the regulator goes away (in our example, - 0), but the virtue of the regulator is that for its finite value, the result is finite. However, the result usually includes terms proportional to expressions like 1 / which are not well-defined in the limit epsilonto 0. Regularization is the first step towards obtaining a completely finite and meaningful result; in quantum field theory it must be usually followed by a related, but independent technique called renormalization. Renormalization is based on the requirement that some physical quantities expressed by seemingly divergent expressions such as 1 / are equal to the observed values. Such a constraint allows one to calculate a finite value for many other quantities that looked divergent.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786131247958
- Editor Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
- Genre Physik & Astronomie
- Größe H220mm x B220mm
- EAN 9786131247958
- Format Fachbuch
- Titel Regularization (Physics)
- Herausgeber Betascript Publishing
- Anzahl Seiten 88
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