Three-body interactions in Fermi systems
作者： B. Friman , A. Schwenk
DOI: 10.1142/9789814329880_0006
关键词: Fermi Gamma-ray Space Telescope 、 Fermi liquid theory 、 Physics 、 Atomic physics 、 Quasiparticle 、 Valence (chemistry) 、 Condensed matter physics 、 Neutron 、 Polaron 、 Excited state 、 Fermi gas
摘要: We show that the contributions of three-quasiparticle interactions to normal Fermi systems at low energies and temperatures are suppressed by n_q/n compared two-body interactions, where n_q is density excited or added quasiparticles n ground-state density. For finite systems, corresponding ratio particle numbers N_q/N. This illustrated for polarons in strongly interacting spin-polarized gases valence neutrons neutron-rich calcium isotopes.
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