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| | I would like to introduce myself to you, I am Jayson Simcox but I don't like when people use my full name. Credit authorising is how she makes a living. Mississippi is the only location I've been residing in but I will have to transfer in a year or two. To perform lacross is the thing I adore most of all.<br><br>My site: [http://www.skullrocker.com/blogs/post/10991 clairvoyant psychic] |
| In [[theoretical physics]], one often analyzes theories with [[supersymmetry]] in which '''D-terms''' play an important role. In four dimensions, the minimal N=1 supersymmetry may be written using a [[superspace]]. This superspace involves four extra fermionic coordinates <math>\theta^1,\theta^2,\bar\theta^1,\bar\theta^2</math>, transforming as a two-component [[spinor]] and its conjugate.
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| Every superfield, i.e. a field that depends on all coordinates of the superspace, may be expanded with respect to the new fermionic coordinates. The generic kind of superfields, typically a [[vector superfield]], indeed depend on all these coordinates. The last term in the corresponding expansion, namely <math>D \theta^1\theta^2\bar\theta^1\bar\theta^2</math>, is called the D-term.
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| Manifestly supersymmetric [[Lagrangian]]s may also be written as [[integral]]s over the whole superspace. Some special terms, such as the [[superpotential]], may be written as integrals over <math>\theta</math>s only, which are known as [[F-term]]s, and should be contrasted with the present D-terms.
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| ==See also==
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| * [[F-term]]
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| * [[Supersymmetric gauge theory]]
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| {{DEFAULTSORT:D-Term}}
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| [[Category:Supersymmetry]]
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| {{Particle-stub}}
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Revision as of 03:00, 18 February 2014
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