HAVEN 发表于 2025-3-21 16:35:42

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发怨言 发表于 2025-3-22 00:03:17

1864-5879 antum theory by functional integrals, as well as the setup. In Chap. 2, the techniques of Gaus­ sian integration and Feynman graph expansions are introduced. I then give simp978-3-642-08430-0978-3-662-03873-4Series ISSN 1864-5879 Series E-ISSN 1864-5887

interlude 发表于 2025-3-22 01:23:58

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良心 发表于 2025-3-22 07:05:34

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antecedence 发表于 2025-3-22 09:14:37

Techniques,To get a deeper understanding, as well as the ability to do field theoretic calculations, we need to learn the standard techniques of Gaussian integration. Not all of this will be needed in Chap. 3, but these standard techniques are a prerequisite for reading most of the current literature in field theory.

蚀刻术 发表于 2025-3-22 15:20:55

The Fermi Surface Problem,In this chapter, we consider an infrared problem with fermions, which is physically more realistic than the ultraviolet problem in ø. theory. In infrared problems, the perturbation expansion is singular because of the slow decay of the free propagator at large distances, not because of a short-distance singularity.

Rotator-Cuff 发表于 2025-3-22 17:46:14

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BRIEF 发表于 2025-3-22 21:54:09

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Dedication 发表于 2025-3-23 01:43:40

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中国纪念碑 发表于 2025-3-23 09:21:36

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查看完整版本: Titlebook: Renormalization; An Introduction Manfred Salmhofer Textbook 1999 Springer-Verlag Berlin Heidelberg 1999 Boson.Dirac equation.Feyman graph e