Analytic and numerical approaches for depictive 3-loop integrals using sector decomposition
arxiv(2024)
摘要
Four 3-loop two-point functions are studied analytically and numerically
using a simplified sector decomposition method. The coefficients of the
ultraviolet divergent part are determined analytically, and those of the finite
part are computed numerically. The energy dependence of the integrals is shown
explicitly, and a discussion of its behavior is presented.
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