کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1843556 | 1645193 | 2006 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differential equations and high-energy expansion of two-loop diagrams in D dimensions
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New method of calculation of master integrals using differential equations and asymptotical expansion is presented. This method leads to the results exact in space–time dimension D having the form of the convergent power series. As an application of this method, we calculate the two-loop master integral for “crossed-triangle” topology which was previously known only up to O(ε)O(ε) order. The case when a topology contains several master integrals is also considered. We present an algorithm of the term-by-term calculation of the asymptotical expansion in this case and analyze in detail the “crossed-box” topology with three master integrals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 732, Issues 1–2, 2 January 2006, Pages 169–182
Journal: Nuclear Physics B - Volume 732, Issues 1–2, 2 January 2006, Pages 169–182
نویسندگان
A.V. Bogdan, R.N. Lee,