# Tag Info

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The existence of auxiliary fields can be motivated in two different (but related) ways that I know about. The first is using superspace. Superfields are functions of position and two Grassman variables. The auxiliary fields are necessary terms to ensure that a superfield remains a superfield under SUSY transformations. The second way to motivate auxiliary ...

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Saying that a splitting varies over the moduli space is not completely well defined: you have to say how to identify the total spaces at different points of the moduli i.e. to specify a flat connection on the bundle of total spaces. In the B-model, if you take the Gauss-Manin connection as the flat connection then the Hodge splitting varies over the moduli ...

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Spin one fields are in the adjoint representation because of the specific transformation behaviour of such modes under gauge symmetries. This is basically a symmetry requirement on the lagrangian. Regarding your second question: the two multiplets are different. In one case we have a central charge and in the other we do not. However, the issue is ...

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Short form: 1) Waffle with more and more of less and less as Yukawa potentials. 2) Do what everybody did to "explain" the Pioneer anomaly, the Fifth Force, absence of proton decay, and Gran Sasso's "superluminal" neutrinos: parameterize! There is nothing sacred about quantum gravitation or SUSY other than they employ vast numbers of people who cannot ...

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It was shown by Zumino (Supersymmetry and Kahler Manifolds Phys.Lett. B87 (1979) 203 ) that the supersymmetric non-linear sigma model in four-dimensions (with target $M$) necessarily requires the manifold, $M$, to be Kahler. A dimensional reduction of this model leads to a two-dimensional nonlinear sigma model with $(2,2)$ supersymmetry. (See also: B. ...

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For an elementary introduction to supersymmetric quantum mechanics see Supersymmetry and Quantum Mechanics by Cooper et al. available at http://arxiv.org/abs/hep-th/9405029

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Sterile neutrinos are not part of a standard SUSY model. Supersymmetry by itself doesn't do any better at explaining neutrino masses then the Standard Model. Adding sterile (i.e., not interacting with any known particles) neutrinos to either the Standard Model or a supersymmetric model (such as the MSSM) can naturally explain the observed light neutrino ...

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When you say: "However, I'm pretty sure that this is a Dirac mass, and not a Majorana mass." that's where you are confused. (Why did you think you were sure of this?) A Majorana mass has that form, and so does a Dirac mass. They have the exact same Feynman rule arrow structure when you use 2-component notation. It is just that for a Majorana mass, the ...

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