期刊
PHYSICS LETTERS B
卷 531, 期 3-4, 页码 203-208出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(01)01504-0
关键词
effective field theory; field redefinition; occupation number; momentum distribution; (e, e ' p) experiments
The question of whether occupation numbers and momentum distributions of nucleons in nuclei are observables is considered from an effective field theory perspective. Field redefinitions lead to variations that imply the answer is negative, as illustrated in the interacting Fermi gas at low density. Implications for the interpretation of (e, e'p) experiments with nuclei are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
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