کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10724883 1034047 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
From twistor actions to MHV diagrams
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
From twistor actions to MHV diagrams
چکیده انگلیسی
We show that MHV diagrams are the Feynman diagrams of certain twistor actions for gauge theories in an axial gauge. The gauge symmetry of the twistor action is larger than that on space-time and this allows us to fix a gauge that makes the MHV formalism manifest but which is inaccessible from space-time. The framework is extended to describe matter fields: as an illustration we explicitly construct twistor actions for an adjoint scalar with arbitrary polynomial potential and a fermion in the fundamental representation and show how this leads to additional towers of MHV vertices in the MHV diagram formalism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 648, Issue 1, 26 April 2007, Pages 90-96
نویسندگان
, , ,