Physics – Plasma Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dnp.1wa04s&link_type=abstract
Geophysical Research Letters, v. 24, No. 17, p. 2111 (1997).
Physics
Plasma Physics
6025 Planetology: Comets And Small Bodies, Interactions With Solar Wind Plasma And Fields, 2756 Magnetospheric Physics, Planetary Magnetospheres (5443, 5737, 6030), 2732 Magnetosphere Interactions With Satellites And Rings, 7823 Space Plasma Physics, Ionization Processes
Scientific paper
Instanton-induced interaction is well known to play a significant role in chiral symmetry breaking, creation of nearly massless pions and very heavy η' mesons. The same interaction translated into quark-quark channels leads to significant binding of u and d quarks into a spin-isospin-zero diquark. This effect is about the main contribution to N-Δ mass difference. Although non-leading for large number of colors N_c, it is equally strong to attraction in bar q q channel for N_c=2, and so in the latter case the difference in binding of S=0 and S=1 diquarks should be as large as between π and ρ mesons. We discuss some phenomenological consequences of this clustering effect for the nucleon. The same interaction leads to color superconducting phase in high density matter, with a gap of the order of 100 MeV. We discuss and compare several possible structures of such phases.
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