Numerical Evaluation of a Two-Loop Diagram in the Cutoff
Regularization |
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Authors: | YANG Ji-Feng ZHOU Jie WU Chen |
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Institution: | Department of Physics, East China Normal University,
Shanghai 200062, China |
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Abstract: | The sunset diagram of λФ4 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. |
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Keywords: | regularization scheme radiative symmetry breaking |
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