S-matrix approach to equation of state of nuclear matter

Details S-matrix approach to equation of state of nuclear matter S-matrix approach to equation of state of nuclear matter

2008-01-03

arxiv.org/abs/0801.0498v2

Phys.Rev.C77:032201,2008

Physics

Nuclear Physics

Nuclear Theory

Version to appear in PRC, Rapid Communications

Scientific paper

10.1103/PhysRevC.77.032201

We calculate the equation of state of nuclear matter based on the general analysis of the grand canonical partition function in the $S$-matrix framework. In addition to the low mass stable particles and their two-body scattering channels considered earlier, the calculation includes systematically all the higher mass particles and their exited states as well as the scattering channels formed by any number of these species. We estimate the latter contribution by resonances in all the channels. The resulting model-independent virial series for pressure gets substantial contribution from the heavy particles and the channels containing them. The series converges for larger values of baryon density than found earlier.

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