Studies in Relativistic Nuclear Physics.
Abstract
In the light of recent experimental advances made in the areas of nucleonnucleus interactions and electron nucleus interactions we investigate certain problems which have arisen in these fields. In recent years various works have convincingly shown that nucleus is best treated as a relativistic system. Work in relativistic nuclear physics can be broadly divided into two categories. One is Dirac phenomenology where one uses several adjustable parameters to fit experimental data. The Relativistic BruecknerHartreeFock (RBHF) approximation belongs to the second category where there are no adjustable parameters. When comparison is made between the strength of the relativistic potentials obtained in microscopic calculation and the (relativistic) phenomenological potentials it is found that the real parts of the potentials differ by about twentyfive percent. Usually, the phenomenological potentials are of only two kinds, (Lorentz) scalar and vector. Since for a finite system the selfenergy operator is nonlocal, it is clear that there are several other terms with different (Lorentz) structures that could be present in the general form of this operator. (It was shown recently that there are eight scalar invariants that determine the scattering of an offshell nucleon from an onshell spinzero nucleus.) In part I of this thesis we discuss the calculation of the complete potential. Also we compare the microscopic calculation with the phenomenology and show how to resolve the apparent disagreement between the theoretical and phenomenological potentials. For a historical survey and detailed description of relativistic nuclear dynamics we refer to the book: Relativistic Nuclear Physics : Theories of Structure and Scattering by L. S. Celenza and C. M. Shakin, to be published by World Scientific, Singapore. Recently we have seen some theoretical work which suggest that the properties of the nucleon are modified in the nuclear medium. Specifically we are interested in the recently developed model of hadron structure (Covariant Soliton Dynamics) which is able to provide parameterfree predictions of the modification of nucleon properties in nuclei. In part II of this work we investigate the predictions of this model in the analysis of (e,e') inclusive experiments near the quasielastic peak.
 Publication:

Ph.D. Thesis
 Pub Date:
 1985
 Bibcode:
 1985PhDT........89H
 Keywords:

 Physics: Nuclear