Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Struktur und Dynamik von Kernen I

HK 3.5: Vortrag

Montag, 15. März 2010, 17:45–18:00, HG II

Chiral thermodynamics of nuclear matter — •Salvatore Fiorilla, Norbert Kaiser, and Wolfram Weise — Physik-Department, TU München, D-85747 Garching

We present a calculation of the equation of state of nuclear matter in the frame of in-medium chiral perturbation theory. The calculations are performed up to three-loop order in the free energy density. The contributions to the free energy per particle originate from one- and two-pion exchange diagrams; the effects from two-pion exchange with Δ -isobar excitation are also included, as well as three-body forces. The equation of state and the corresponding phase diagram, displaying the liquid-gas phase transition, is investigated for different proton-to-neutron ratios, from isospin-symmetric nuclear matter to the limiting case of pure neutron matter.
Work supported in part by BMBF, GSI and the DFG Cluster of Excellence “Origin and Structure of the Universe”.

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