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原文連結
論文資訊
- 類型：已發表論文
- 日期：2005-05-09
摘要
We derive the renormalized Schwinger-Dyson equations for the one- and two-point functions in the auxiliary field formulation of Coleman, Jackiw, and Politzer [S. Coleman, R. Jackiw, and H. D. Politzer, Phys. Rev. D 10, 2491 (1974).] for lambda phi(4) field theory, to order 1/N, in the 2PI-1/N expansion. We show that the 重整化 of the broken-symmetry theory depends only on the counter terms of the symmetric theory with phi = 0, as discussed in our previous paper [F. Cooper, B. Mihaila, and J. F.Dawson, Phys. Rev. D 70, 105008 (2004).]. We find that the 2PI-1/N expansion violates the Goldstone theorem at order 1/N. In using the O(4) model as a low energy effective field theory of pions to study the time 演化 of disoriented chiral condensates one has to explicitly break the O(4) symmetry to give t
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