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Numerical evaluation of a two loop diagram in the cutoff regularization | | Ji-Feng Yang
; Jie Zhou
; Chen Wu
; | | Date: |
23 Dec 2002 | | Journal: | Commun.Theor.Phys. 40 (2003) 461-465 | | Subject: | hep-ph hep-th nucl-th | | Affiliation: | ECNU, Shanghai | | Abstract: | The sunset diagram of $lambdaphi^4$ 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. | | Source: | arXiv, hep-ph/0301205 | | Services: | Forum | Review | PDF | Favorites | |
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