Abstract
The nucleon form factors of the energy–momentum tensor are studied in nuclear medium in the framework of the in-medium modified Skyrme model. We obtain a negative D-term, in agreement with results from other approaches, and find that medium effects make the value of d1 more negative.
Highlights
The nucleon form factors of the energy-momentum tensor are studied in nuclear medium in the framework of the in-medium modified Skyrme model
The generalized parton distributions (GPDs) [2,3,4,5], which are accessible via hard exclusive reactions [6,7,8,9,10,11,12,13,14,15], make it possible to extract information on the energy-momentum tensor (EMT) form factors of the nucleon
The recent interest about the EMT form factors was stimulated by the fact that it is possible to define in QCD and to access in experiment the separate quark and gluon contributions to the form factors
Summary
The EMT form factors of the nucleon have been studied in a variety of theoretical approaches: in lattice QCD [22,23,24,25,26,27,28], in chiral perturbation theory [30,31,32,33,34], in the chiral quark-soliton model [35,36,37,38,39,40,41,42] as well as in the Skyrme model [43]. In Ref. [52], the model has been further elaborated, the stabilizing term being refined in medium, which we will take as our framework to study the EMT form factors of the nucleon in nuclear matter
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