Numerical evaluation of a two loop diagram in the cutoff regularization
High Energy Physics - Phenomenology
2018-01-17 v2 High Energy Physics - Theory
Nuclear Theory
Abstract
The sunset diagram of theory is evaluated numerically in cutoff scheme and a nonzero finite term (in accordance with dimensional regularization (DR) result) is found in contrast to published calculations. This finding dramatically reduces the critical couplings for symmetry breaking in the two loop effective potential discussed in our previous work.
Cite
@article{arxiv.hep-ph/0301205,
title = {Numerical evaluation of a two loop diagram in the cutoff regularization},
author = {Ji-Feng Yang and Jie Zhou and Chen Wu},
journal= {arXiv preprint arXiv:hep-ph/0301205},
year = {2018}
}
Comments
6 pages, revtex, to appear in Comm. Theor. Phys