Chiral Perturbation Theory in a Nuclear Background

Details Chiral Perturbation Theory in a Nuclear Background Chiral Perturbation Theory in a Nuclear Background

2003-11-10

arxiv.org/abs/hep-ph/0311128v1

Annals Phys. 312 (2004) 92-127

Physics

High Energy Physics

High Energy Physics - Phenomenology

42 pages, Latex, 4 Postscript figures

Scientific paper

We propose a novel way to formulate Chiral Perturbation Theory in a nuclear background, characterized by a static, non-uniform distribution of the baryon number that describes the finite nucleus. In the limiting case of a uniform distribution, the theory reduces to the well-known zero-temperature in-medium ChPT. The proposed approach is used to calculate the self-energy of the charged pion in the background of the heavy nucleus at O(p^5) in the chiral expansion, and to derive the leading terms of the pion-nucleus optical potential.

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