Skip to Main content Skip to Navigation
Journal articles

Scalar susceptibility and chiral symmetry restoration in nuclei

Abstract : We study the nuclear modification of the scalar QCD susceptibility, calculated as the derivative of the quark condensate with respect to the quark mass. We show that it has two origins. One is the low lying nuclear excitations. At normal nuclear density this part is constrained by the nuclear incompressibility. The other part arises from the individual nucleon response and it is dominated by the pion cloud contribution. Numerically the first contribution dominates. The resulting increase in magnitude of the scalar susceptibility at normal density is such that it becomes close to the pseudoscalar susceptibility, while it is quite different in the vacuum. We interpret it as a consequence of chiral symmetry restoration in nuclei.
Document type :
Journal articles
Complete list of metadata
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Monday, September 22, 2003 - 3:40:21 PM
Last modification on : Friday, October 8, 2021 - 10:46:09 AM

Links full text





G. Chanfray, M. Ericson, P.A.M. Guichon. Scalar susceptibility and chiral symmetry restoration in nuclei. Physical Review C, American Physical Society, 2003, 68, pp.035209. ⟨10.1103/PhysRevC.68.035209⟩. ⟨in2p3-00013807⟩



Record views