کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8187423 1528795 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
SU(2) Higher-order effective quark interactions from polarization
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
SU(2) Higher-order effective quark interactions from polarization
چکیده انگلیسی
Higher order quark effective interactions are found for SU(2) flavor by departing from a non-local quark-quark interaction. By integrating out a component of the quark field, the determinant is expanded in chirally symmetric and symmetry breaking effective interactions up to the fifth order in the quark bilinears. The resulting coupling constants are resolved in the leading order of the longwavelength limit and exact numerical ratios between several of these coupling constants are obtained in the large quark mass limit. In this level, chiral invariant interactions only show up in even powers of the quark bilinears, i.e. O(ψ¯ψ)2n (n=1,2,3,..), whereas (explicit) chiral symmetry breaking terms emerge as O(ψ¯ψ)n being always proportional to some power of the Lagrangian quark mass.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 761, 10 October 2016, Pages 424-427
نویسندگان
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