Applications of the large mass expansion

Fleischer J, Kotikov AV, Veretin OL (1998)
ACTA PHYSICA POLONICA B 29(10): 2611-2625.

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The method of the large mass expansion (LME) is investigated for selfenergy and vertex functions in two-loop order. It has the technical advantage that in many cases the expansion coefficients can be expressed analytically. As long as only one non-zero external momentum squared, q(2), is involved also the Taylor expansion (TE) w.r.t. small q(2) yields high precision results in a domain sufficient for most applications. In the case of only one non-zero mass M and only one external momentum squared, the expansion w.r.t. q(2)/M-2 is identical for the TE and the LME. In this case the combined techniques yield analytic expressions for many diagrams, which are quite easy to handle numerically.
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Fleischer J, Kotikov AV, Veretin OL. Applications of the large mass expansion. ACTA PHYSICA POLONICA B. 1998;29(10):2611-2625.
Fleischer, J., Kotikov, A. V., & Veretin, O. L. (1998). Applications of the large mass expansion. ACTA PHYSICA POLONICA B, 29(10), 2611-2625.
Fleischer, J., Kotikov, A. V., and Veretin, O. L. (1998). Applications of the large mass expansion. ACTA PHYSICA POLONICA B 29, 2611-2625.
Fleischer, J., Kotikov, A.V., & Veretin, O.L., 1998. Applications of the large mass expansion. ACTA PHYSICA POLONICA B, 29(10), p 2611-2625.
J. Fleischer, A.V. Kotikov, and O.L. Veretin, “Applications of the large mass expansion”, ACTA PHYSICA POLONICA B, vol. 29, 1998, pp. 2611-2625.
Fleischer, J., Kotikov, A.V., Veretin, O.L.: Applications of the large mass expansion. ACTA PHYSICA POLONICA B. 29, 2611-2625 (1998).
Fleischer, Jochem, Kotikov, AV, and Veretin, OL. “Applications of the large mass expansion”. ACTA PHYSICA POLONICA B 29.10 (1998): 2611-2625.
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