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arXiv · hep-ph/0311128

Chiral Perturbation Theory in a Nuclear Background

L. Girlanda·A. Rusetsky·W. Weise
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Abstract

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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L. Girlanda, A. Rusetsky, W. Weise. 2003-11-10. Chiral Perturbation Theory in a Nuclear Background. https://doi.org/10.1016/j.aop.2004.01.010

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