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説明
We use chiral perturbation theory to compute the effective nucleon propagator in an expansion about low density in the chiral limit. We neglect four-nucleon interactions and focus on pion exchange. Evaluating the nucleon self-energy on its mass shell to leading order, we show that the effective nucleon mass increases by a small amount. We discuss the relevance of our results to the structure of compact stars.
Manuscript rewritten, especially conclusions about mass shifts; contact terms cannot be neglected. Computation unchanged
収録刊行物
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- Physical Review C
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Physical Review C 69 2004-03-26
American Physical Society (APS)