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The linear multiplet and ectoplasm
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DOI：10.1007/JHEP09(2012)131.png)
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Abstract
En 中文
In the framework of the superconformal tensor calculus for 4D N = 2 supergravity, locally supersymmetric actions are often constructed using the linear multiplet. We provide a superform formulation for the linear multiplet and derive the corresponding action functional using the ectoplasm method (also known as the superform approach to the construction of supersymmetric invariants). We propose a new locally supersymmetric action winch makes use of a deformed linear multiplet. The novel feature of this multiplet is that it corresponds to the case of a gauged central charge using a one-form potential not annihilated by the central charge (unlike the standard N = 2 vector multiplet). Such a gauge one-form can be chosen to describe a variant nonlinear vector-tensor multiplet. As a byproduct of our construction, we also find a variant realization of the tensor multiplet in supergravity where one of the auxiliaries is replaced by the field strength of a gauge three-form.
Keywords:
Extended Supersymmetry
Superspaces
Supergravity Models
Journal
IF:
5.5
Papers:
3.9W
Citations:
13.7W