Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-10-02
Physics
Nuclear Physics
Nuclear Theory
3 pages, 2 figures, talk presented at the 19th European Conference on Few-Body Systems
Scientific paper
10.1063/1.1932976
Strongly interacting matter such as nuclear or quark matter leads to few-body bound states and correlations of the constituents. As a consequence quantum chromodynamics has a rich phase structure with spontaneous symmetry breaking, superconductivity, condensates of different kinds. All this appears in many astrophysical scenarios. Among them is the formation of hadrns during the early stage of the Universe, the structure of a neutron star, the formation of nuclei during a supernova explosion. Some of these extreme conditions can be simulated in heavy ion colliders. To treat such a hot and dense system we use the Green function formalism of many-body theory. It turns out that a systematic Dyson expansion of the Green functions leads to modified few-body equations that are capable to describe phase transitions, condensates, cluster formation and more. These equations include self energy corrections and Pauli blocking. We apply this method to nonrelativistic and relativistic matter. The latter one is treated on the light front. Because of the medium and the inevitable truncation of space, the few-body dynamics and states depend on the thermodynamic parameters of the medium.
Beyer Michael
Frederico Tobias
Mattiello Stefano
Schuck Peter
Sofianos S. A.
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