Relativistic multiple scattering theories
The conventional nonrelativistic nuclear many-body dynamics can be embedded in a Lorentz invariant dynamics with the same degrees of freedom. The qualitative features responsible for the agreement of such a theory with nucleon-nucleus scattering data are the same as for the nonrelativistic theory. Relativistic effects (i.e., the consequences of Lorentz invariance) can be investigated quantitatively. For medium-energy proton beams these relativistic effects are expected to be small. However, the requirements of Lorentz invariance do not determine the nuclear dynamics, or even severely restrict its form. Dirac phenomenology, as well, is consistent with minimal requirements of relativistic quantum theory: (i) The existence of a Hilbert space of states on which Lorentz transformations and translations are implemented by unitary operators; (ii) Positivity of the energy spectrum. It is also compatible with the fact that nucleons are composites of quarks, and its success does not imply that antinucleon degrees of freedom play a prominent role in medium-energy nucleon-nucleus scattering. 20 refs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5478086
- Report Number(s):
- CONF-8506162-1; ON: DE85014986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BANACH SPACE
ENERGY SPECTRA
FIELD THEORIES
FUNCTIONS
GENERAL RELATIVITY THEORY
HILBERT SPACE
LIE GROUPS
MANY-BODY PROBLEM
MATHEMATICAL SPACE
MULTIPLE SCATTERING
POINCARE GROUPS
RELATIVITY THEORY
SCATTERING
SPACE
SPECTRA
SYMMETRY GROUPS
WAVE FUNCTIONS