The alpha-particle in nuclear matter
Abstract
Among the light nuclear clusters the alpha-particle is by far the strongest bound system and therefore expected to play a significant role in the dynamics of nuclei and the phases of nuclear matter. To systematically study the properties of the alpha-particle we have derived an effective four-body equation of the Alt-Grassberger-Sandhas (AGS) type that includes the dominant medium effects, i.e. self energy corrections and Pauli-blocking in a consistent way. The equation is solved utilizing the energy dependent pole expansion for the sub system amplitudes. We find that the Mott transition of an alpha-particle at rest differs from that expected from perturbation theory and occurs at approximately 1/10 of nuclear matter densities.
Cite
@article{arxiv.nucl-th/0003071,
title = {The alpha-particle in nuclear matter},
author = {M. Beyer and S. A. Sofianos and C. Kuhrts and G. Roepke and P. Schuck},
journal= {arXiv preprint arXiv:nucl-th/0003071},
year = {2009}
}
Comments
9 pages RevTex file, 1 figure, submitted to Phys. Lett. B