Relativistic spectral function of nucleon in hot nuclear matter

Details Relativistic spectral function of nucleon in hot nuclear matter Relativistic spectral function of nucleon in hot nuclear matter

2010-04-13

arxiv.org/abs/1004.2162v2

Phys.Rev.C82:045202,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevC.82.045202

We present a simple calculation of the nucleon self-energy in nuclear matter at finite temperature in a relativistic framework, using the real time thermal field theory. The imaginary parts of one-loop graphs are identified with discontinuities across the unitary and the Landau cuts. We find that in general both the cuts contribute significantly to the spectral function in the region of (virtual) nucleon mass usually considered, even though the unitary cut is ignored in the literature. Also our relativistic spectral function differs from the one in non-relativistic approximation, used in some earlier calculations.

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