On mass dependences of the one-loop effective action in simple backgrounds

O-Kab Kwon; Choonkyu Lee; Hyunsoo Min

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arXiv · hep-th/0003040

On mass dependences of the one-loop effective action in simple backgrounds

O-Kab Kwon·Choonkyu Lee·Hyunsoo Min

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Abstract

If background fields are soft on the scale set by mass of the particle involved, a reliable approximation to the field-theoretic one-loop effective action is obtained by a systematic large mass expansion involving higher-order Seeley-DeWitt coefficients. Moreover, if the small mass limit of the effective action in a particular background has been found by some other means, the two informations may be used to infer the corresponding result for {\em arbitrary} mass values. This method is used to estimate the one-loop contribution to the QCD vacuum tunneling amplitude by quarks of arbitrary mass.

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BibTeX RIS

O-Kab Kwon, Choonkyu Lee, Hyunsoo Min. 2000-03-06. On mass dependences of the one-loop effective action in simple backgrounds. https://arxiv.org/abs/hep-th/0003040

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