Quark Correlations in Nucleons and Nuclei

A dynamical quark model of hadron and nucleus structure is proposed. In the frame of the model, called the Strongly Correlated Quark Model, quarks and nucleons inside nuclei are arranged in crystal– like structure. How are nucleon properties modified inside nuclei and do quarks manifest themselves explicitly in ground state nuclei? These questions are the topics of this paper, where we show that the nuclear modification of nucleon properties is a result of correlations of quarks of bound nucleons. The analysis has been performed in the frame of the so–called Strongly Correlated Quark Model (SCQM) [1]. The ingredients of the model are the following. A single quark of definite color embedded in the vacuum begins to polarize its surrounding resulting in the formation of quark and gluon condensate. At the same time it experiences the pressure of the vacuum because of zero point radiation field or vacuum fluctuations which act on the quark tending to destroy the ordering of the condensate. Suppose that we place the corresponding antiquark in the vicinity of the first one. Owing to their opposite signs color polarization fields of the quark and antiquark interfere destructively in the overlapped space regions eliminating each other maximally in the space around the middle–point between the quarks. This effect leads to a decrease in condensates density in that space region and overbalancing of the vacuum pressure acting on the quark and antiquark from outer space regions. As a result an attractive force between the quark and antiquark emerges and the quark and antiquark start to move towards each other. The density of the remaining condensate around the quark (antiquark) is identified with the hadronic matter distribution. At maximum displacement in the qq− system corresponding to small overlapping of polarization