Self-consistent Green's functions calculation of the nucleon mean-free path

Details Self-consistent Green's functions calculation of the nucleon mean-free path Self-consistent Green's functions calculation of the nucleon mean-free path

2011-09-22

arxiv.org/abs/1109.4904v2

Phys. Rev. Lett. 108, 012501 (2012)

Physics

Nuclear Physics

Nuclear Theory

5 pages, 4 figures. Minor changes, bibliography corrected. Accepted version in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.108.012501

The extension of Green's functions techniques to the complex energy plane provides access to fully dressed quasi-particle properties from a microscopic perspective. Using self-consistent ladder self-energies, we find both spectra and lifetimes of such quasi-particles in nuclear matter. With a consistent choice of the group velocity, the nucleon mean-free path can be computed. Our results indicate that, for energies above 50 MeV at densities close to saturation, a nucleon has a mean-free path of 4 to 5 femtometers.

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