Numerical Regularization for 4-loop Self-Energy Feynman Diagrams
Numerical Regularization for 4-loop Self-Energy Feynman Diagrams
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4 环自能费曼图的数值正则化
DOI:
10.1088/1742-6596/2438/1/012147
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Ishikawa T
中科院分区:
文献类型:
--
作者:
de Doncker E;Yuasa F;Ishikawa T
In recent work we computed 4-loop integrals for self-energy diagrams with 11 massive internal lines. Presently we perform numerical integration and regularization for diagrams with 8 to 11 lines, while considering massive and massless cases. For dimensional regularization, a sequence of integrals is computed depending on a parameter (ε) that is incorporated via the space-time dimension, and approaches zero. We consider diagrams where the leading term in the expansion is in 1/ε 2 or in 1/ε or finite. The numerical integration methods include non-adaptive–double exponential, and Quasi-Monte Carlo methods with composite lattice rules implemented in CUDA C for acceleration on GPUs. The leading term coefficients in the integral expansion are obtained via linear or nonlinear extrapolation as ε tends to zero.
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DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
P. Baikov;K. Chetyrkin
通讯作者:
K. Chetyrkin
DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
Alexander V. Smirnov;M. Tentyukov
通讯作者:
M. Tentyukov
DOI:
10.1109/csci.2017.276
发表时间:
2017
期刊:
2017 International Conference on Computational Science and Computational Intelligence (CSCI)
影响因子:
--
作者:
Ahmed H. Almulihi;E. Doncker
通讯作者:
E. Doncker
影响因子:
4.1
作者:
J. N. Lyness
通讯作者:
J. N. Lyness
影响因子:
6.3
作者:
S. Borowka;G. Heinrich;S. Jahn;S. Jones;M. Kerner;J. Schlenk
通讯作者:
J. Schlenk