Pion condensation and realistic interactions
نویسندگان
چکیده
منابع مشابه
Realistic models of pion-exchange three-nucleon interactions
We present realistic models of pion-exchange three-nucleon interactions obtained by fitting the energies of all the 17 bound or narrow states of 3 ≤ A ≤ 8 nucleons, calculated with less than 2% error using the Green’s function Monte Carlo method. The models contain two-pion-exchange terms due to πN scattering in Sand P-waves, three-pion-exchange terms due to ring diagrams with one ∆ in the inte...
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Elastic pion–pion and pion–nucleon scattering are reviewed in the context of chiral perturbation theory. Theoretical results from systematic low–energy expansions to O(p) for ππ and to O(p) for πN are compared with experimental data. Possible future developments are outlined. Talk given at the Workshop on Chiral Dynamics 1997 Mainz, Germany, Sept. 1 5, 1997 To appear in the Proceedings * Work s...
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We revisit the suggestion that charged ρ-mesons undergo Bose-Einstein condensation in isospinrich nuclear matter. Using a simple version of the Nambu-Jona-Lasinio (NJL) model, we conclude that ρ-meson condensation is either avoided or postponed to isospin chemical potentials much higher than the ρ-meson mass as a consequence of the repulsive interaction with the preformed pion condensate. In or...
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An extended pion source, which can be temporarily created by a high energy nuclear collision, will also absorb and distort the outgoing pions. We discuss how this effect alters the interferometric pattern of the two-pion momentum correlation function. In particular, we show that the two-pion correlation function decreases rapidly when the opening angle between the pions increases. The opening-a...
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Within the finite-temperature Greens-function formalism we study the equation of state of a hot interacting pion gas at zero chemical potential. Employing realistic ππ meson-exchange interactions we selfconsistently calculate the in-medium single-pion selfenergy and the ππ scattering amplitude in the quasiparticle approximation. These quantities are then used to evaluate the thermodynamic poten...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 1981
ISSN: 0556-2813
DOI: 10.1103/physrevc.23.1154