Dirac Sea Contribution in Relativistic Random Phase Approximation

Details Dirac Sea Contribution in Relativistic Random Phase Approximation Dirac Sea Contribution in Relativistic Random Phase Approximation

2003-12-22

arxiv.org/abs/nucl-th/0312095v4

J.Phys. G32 (2006) 1269-1278

Physics

Nuclear Physics

Nuclear Theory

17 pages, 4 figures (the revised version.The paper and figures are revised). accepted by J. Phys. G

Scientific paper

10.1088/0954-3899/32/9/005

In the hadrodynamics (QHD) there are two methods to take account of the contribution of negative-energy states in the relativistic random phase approximation (RRPA). Dawson and Furnstahl made the ansatz that the Dirac sea were empty, while according to the Dirac hole theory the sea should be fully occupied. The two methods seem contradictory. Their close relationship and compatibility are explored and in particular the question of the ground-state (GS) instability resulting from Dawson-Furnstanhl's ansatz is discussed.

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