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On the equivalence of regularization schemes | Ji-Feng Yang
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25 Nov 2001 | Journal: | Commun.Theor.Phys. 38 (2002) 317-321 | Subject: | hep-ph gr-qc hep-th nucl-th quant-ph | Affiliation: | ECNU, Shanghai | Abstract: | We illustrated via the sunset diagram that dimensional regularization ’deforms’ the nonlocal contents of multi-loop diagrams with its equivalence to cut-off regularization scheme recovered only after sub-divergence were subtracted. Then we employed a differential equation approach for calculating loop diagrams to verify that dimensional regularization deformed the ’low energy’ contents before subtraction. The virtues of the differential equation approach were argued especially in non-perturbative perspective. | Source: | arXiv, hep-ph/0111321 | Services: | Forum | Review | PDF | Favorites |
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