CSW rules for massive matter legs and glue loops
نویسندگان
چکیده
منابع مشابه
Deriving CSW rules for massive scalar legs and pure Yang-Mills loops
This article provides two complimentary detailed derivations of CachazoSvrček-Witten-style Feynman rules for Yang-Mills gauge theory coupled to a massive coloured scalar as presented in earlier work. These proceed through a direct canonical transformation method on space-time and through a gauge transformation in an action constructed on twistor space. It is shown explicitly that the field tran...
متن کاملCSW rules for a massive scalar
We derive the analog of the Cachazo-Svrček-Witten (CSW) diagrammatic Feynman rules for four dimensional Yang-Mills gauge theory coupled to a massive colored scalar. The mass term is shown to give rise to a new tower of vertices in addition to the CSW vertices for massless scalars in non-supersymmetric theories. The rules are derived directly from an action, once through a canonical transformati...
متن کاملar X iv : 0 80 5 . 45 77 v 1 [ he p - th ] 2 9 M ay 2 00 8 CSW rules for massive matter legs and glue loops
Cachazo-Svrček-Witten-type Feynman rules for massive matter scalar legs and pure glue loops are presented, obtained by deriving them directly from the space-time action. We comment on the derivation and some sample applications, in particular to calculating one loop effects in pure Yang-Mills theory. Furthermore, we derive CSW rules for effective Higgs-gluon couplings studied in the literature....
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Abstract: The similarity of massive CSW scalar vertices and quark vertices can be understood using a kind of light-cone SUSY transformation presented in this paper. We also show that the canonical transformation generating the MHV-SQCD lagrangian, can be fixed by applying this light-cone SUSY transformation to the canonical transformation for MHV-QCD obtained in paper arxiv:0805.0239. Most of t...
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Probabilistic predicate transformers provide a semantics for imperative programs containing both demonic and probabilistic nondeterminism. Like the (standard) predicate transformers popularised by Dijkstra, they model programs as functions from final results to the initial conditions sufficient to achieve them. This paper presents practical proof rules, using the probabilistic transformers, for...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2008
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2008.09.094